This is one of those "If it was easy, everyone would be doing it". It must have taken a huge amount of time to work out the details of this procedure. Even with your exact instruction, replicating the process is not trivial. This video documenting your procedure is excellent, you have my respect.
It's only because the control circuitry for such spinning displays are now available so you don't have to build a control circuit to do it anymore, at worst you would just have to download some public domain software for something like an arduino or pi computer. I remember buying a battery hand fan that had such a display.
@@Viking009 Depending on where you put the plate relative to the beam and object its easy to create a transmission hologram. The DCG-Hologram really works best with the single beam denisyuk recording setup that I have shown here.
@@Holocreators What I did was a denisyuk style, just placed vertically. The subject was behind the plate, but the table in front was also illuminated by the spread beam. I ended up recording the front side table as a transmission hologram instead of a reflection of the subject on the other side. I didn't expect that, really. Anyway I am not using DCG, as I could only get a red 20mW diode, so I've been experimenting with both PFG-01 and PFG-03 plates
@@Viking009 yes using the pfg plates is a good idea if you just have red. Also when starting out you learn the craft easiert when you know that the holographic plates will perform well every time
Finally a video that walks thru the process in good detail. I’ve been looking for video tutorials on holography for years. Thanks for the effort and sharing your knowledge and experience.
This is really incredible. What an awesome resource this single video is. Fantastic work, though that doesn’t do justice to the work you’ve clearly put in here. Thank you.
I learned about holograms in books as a young child (where I learned you need to minimise vibration in your studio!) and saw my first ones in a museum wayy back in the 80s. I've learned about them in science class. I'm no genius but I do have a fair grasp on some physics including some quantum mechanics and rudimentary signal theory, but for the life of me, no matter how hard I've tried over the last 30-odd years, I cannot understand *how* a hologram manages to manipulate the light to reproduce that 3D effect, and it's clear that no teacher I've asked actually understood it, either. Sure, read up on it, it's "interference patterns" yada yada.. but it still doesn't make sense. It's just mindblowing. Your example hologram at the end is amazing. The 3D structure actually obstructs itself as you turn it around. Incredible.
for me its just the same. I understand the principal behind it, but what really happens on a molecular level is beyond me ;-) Well luckily you can still make a hologram without understanding everything about it
I doubt twenty five minutes of my time will suddenly cause you to understand but I can at least try to explain how I understand it. First concept is the idea of a plane wave, I believe you 'get' the whole light as a wave thing and a plane wave is just coherent light, a bunch of waves all marching in step in the same direction. In 2 dimensions it may help to visualize it as rows of really parallel, regular, and straight ocean waves. Second concept is the reflection of those waves off of an object. If the object is rigid and stationary on the scale less than micrometers, and the plane wave is regular the light reflected off of it will be constant and deterministic, the light coming off the object isn't random and is exactly as stable as the plane wave and the object it is coming from. This reflected light contains all of the information of what the illuminated surface of the object 'is', and it is way more than what we actually see (it's the information of all there is TO see). Third concept is interference, the incoming plane wave and the resulting reflection are going to superimpose. Because the plane wave is coherent (and also monochromatic) and the reflection is not random, a standing wave field is going to develop. There are going to be locations in the volume of the intersection between the incoming plane wave and the reflected light where there is less electric/magnetic field variation (nodes) and places with more variation (anti-nodes). Note: I say less rather than no only because the reflected light is going to have on average less amplitude than the incident plane wave because of the 1/r^2 relationship, this is also why in this setup the film has to be as close to the work piece as possible to try and keep the ratio of light intensity as even as possible (keeping the nodes as 'dark' as possible). Fourth is the really cool thing, diffraction, If you figure out where all of those anti-nodes are and put a little bit of black stuff there (nano-meters in size) and then shine the original plane wave in the same orientation on that meticulously created pattern of anti-nodes, the plane wave actually diffracts off of all those black things in the exact way to recreate the originally reflected image. I'm guessing this is the part where the WTF comes in, all I can really do is try to explain how I rationalize it. The interference pattern is deterministic, the 'only' way to create it is to have the plane wave and the reflected wave interfere. But it was created, and now you are forcing the plane wave into the interference pattern and it can't continue to exist as a plane wave after it interacts with all that stuff, the only way for it to exist in that shape is to recreate the reflected light. Its a bit like saying A+B=C then taking A-C and the only thing you can get is -B where A is the plane wave, B is the reflected light and C is the interference pattern (the negative is identical as a positive for light basically and the whole node vs anti-node thing is the same as + or - B so just let me hand-wave that away as unnecessary for my point). When it comes to making the hologram what you are capturing is the interference pattern, i don't know the chemistry of it for the dichromate, but the nodes and anti-nodes are being encoded into the Volume of the gelatin exposing the dicrhomate. It essentially builds that matrix of little bits of stuff all through the gelatin exactly reproducing the interference pattern. So yeah, then he goes through the process of developing the dichromate, again i don't know the chemistry, so that the encoded pattern interacts with visible light instead of being transparent to it and then there is a hologram. The last bit of hand-wavy stuff is the sun and most 'point' sources of light behave enough like a plane wave for the reconstruction of the object to look basically like the original to our eyes, and the fact that it is not monochromatic and it still works goes to trigonometry (for this type of hologram: Denisyuk) where if you change the angle of the incident light the hologram will change colors something something cosines. \WALL OF TEXT
@@MaxIV77 OMG, that's a big ole mess. Don't overthink this. A hologram is just the wavefront from an object, referenced to a coherent wavefront, by optical interference (the same property that makes an Interferrometer work). The interference exposes the medium with millions of fringes. If you look at a holographic medium under a microscope, it all makes sense. You'll see complicated patterns of lines all crashing into each other. If you block the reference beam, and just expose the medium with the light coming off the subject, you won't get a hologram. Seems easy to me.
@@Holocreators At the end, while you turned the hologram backside and it shown the inverted object parallax, this gave me a hint to how people create holograms where the object appears to be at the front of the glass (or cutting through it) and not behind the glass. ...They just make the hologram of the hologram turned backside at the desired distance, and turning it backside to reveal the original parallax. So, the copied hologram will have the object shifted towards the observer:)
thank you, made my first holo's, in 76' 77 ( still have them ) with Fred Unterseher in berkley,ca. met Richard Rallison and saw his first dicromates. WOW rich said he burned down his dads barn learning to make DCG's . most people have never seen a real holo on glass and fewer have seen DCG bought some DCG's from holo's gallery on haight street in san francisco early 90's they are beautiful your vid is a master work....Gary
Hi, Gary. Thanks for the compliment. If I understand correctly, Richard Rallison was the first person doing DCG holograms. I met Fred in Santa Fee some years ago. Very kind man. All that IPA with its fumes is a huge fire hazard, I can understand why Rich burned down the barn.
Hi Gary. Thank you for your comments. Can you please contact me on mike.walsh.1955@gmail.com? I am trying to find (remember where I saw) a huge hologram. It was somewhere in the east SF bay in about 1979 or 1980. You might have seen it or know someone who has seen it and knows where it is, or if it still exists (40 years ago)? Or if it survived the Livermore earthquake(s) of 1980? I think it was about 1 metre x 1.5 or 2 metres? It is a green transmission hologram of a room. Absolutely stunning! I've never seen anything like it before or since. Like you, a friend and I, made our first holograms in the late 70s (1978). We used a 5 mW HeNe laser borrowed from a high school in San Rafael. Made transmission holograms. Great fun but a real challenge to get them right. I have been trying to find where this huge hologram was/is located so I can take my wife to see it. Maybe Berkeley? Maybe Lawrence Hall of Science? Maybe Lawrence Livermore Museum? I would greatly appreciate any hints or clues you might be able to give me. Thank you Mike
While watching the video, I interrupted several times to google the components and the experiment room.) Thanks for sharing the technology. Everything is very detailed and all conditions are taken into account.
@@Holocreators The amount of knowledge packed into this video is amazing. I can't imaging how much work went into learning all this. But, even more heroic than this is the generosity of sharing it. Thank you so much!
Wow! I don't know anything about what I just watched but I couldn't stop watching. I can't imagine having the patience and skill to do this myself. Bravo to you for making this tutorial.
Such a wonderfully detailed and thorough description of your process. You once again have demonstrated German commitment to quality. Unfortunately after watching the process I have decided that I am not equipped to take on DCG hologram production, but I have a new appreciation of how much these final products are truly worth. Great work!
Watched the whole video start to finish, very informative, and honestly impressive ingenuity on the chemical chambers you made! Thank you for making this. 🍄💙
Thanks for this video!! amazing detail. I am currently following your instructions and trying to make my own hologram. One quick question, for your fixer you are using "Tetenal Superfix Plus Rapid Fixer 1l" correct? Also Is there a place we can purchase holograms you have made? Thanks for your response!
Thanks for putting this video together, so valuable. I'm not sure if I will ever make a hologram but if I do I know where to look. Very impressive. And good luck with the 2 meter hologram!
after 15 min of the video i just gave up on hope that I might one day make or try the process on day ! but I just couldn't not to watch till the end of it in respect of your amazing and in detail explanation and even the environment and workshop that you created for such a sensitive material and processing technique just blown my mind and it shows how much you achieved mastering it ! big holoheart and respect to you and your work
Seems like you just need bigger fluid holding tubs and glove boxes, and tools, just bigger everything to achieve your dream. I would love to see this hologram in the desert. Thank you for all your dedication and passion and hard hard work in getting this info to us. I am starting a company soon and my ultimate goal right now is to get a hologram on something you've probably never seen a hologram on before. I know it's not going to be easy and I'll probably fail 1000 times before it works. I might have some questions in the future, you will be my main guy to ask if I hit some road blocks. I hope to hear from you in the future. Thanks!
Came across your video after seeing a hologram of a card, seeing if it was possible to create one myself. After watching it I can conclude that doing it myself will be "kinda hard", even if I had access to all those tools and materials. Probably going to commission one instead for my current hobby (a collectible card game) and keep this video around if I ever want a new expensive hobby because of how detailed and well-explained everything is. Respect
Actually, I came across this video by accident, but it was so interesting that I kept watching. Great work, very detailed and well told. I am looking forward to see how you will handle making a 2 by 1 meter hologram.
Thank you for such a perfectly articulated instruction..details that are mandatory were not neglected and i am so grateful that ypu would take the time to deliver this information with such detail and perfection..i think you gather how thankfull i am for what you've gifted here..you rock this concept!
Swann, this is a masterwork! When I last did holographry in college, we had a Newport table on top of wool and inner tubes, a magnetic long bore gas laser, spatial filters, polarizers, beam splitters and balancers, dark rooms, stopwatches, and pricey Kodak film. I love your exposure setup, you make it look easy.
Quite astonishing video, thanks so much! A wonderful breakdown of the process - just excellent. I had a try at making some DCG holograms in the mid/late 70's with some success but with nowhere near the uniformity of the results here in this video. Also, Rich Rallison did a wonderful job in the 1970's of industrializing the DCG process with his IDC company in Salt Lake City, which I had a chance to visit in the late seventies.
Fantastic. Rich Rallison is the father of it all it guess. He taught everybody else. Must have been a very interersting charachter. Would have loved to meet him.
Thank you for this excellent presentation. I can truly appreciate it because a friend of mine and I made our first holograms at home in 1978, and, as you have told the story here so well, it was not an easy task. It was very difficult. Your hologram is a reflection hologram, or sometimes called a "white light hologram" because it can be viewed with any white light. My friend and I made transmission holograms, and they need to be illuminated with laser light of the same frequency that was used to make them, in order to be viewable. But they were remarkable! You dream of a 1 metre x 2 metre hologram? It has been done. I have seen one. It was in about 1979 or 1980. I remember it as being about 1 metre high x 1.5 metres wide. I do not recall exactly where I saw it though (40 years ago now!) but I think it was in the museum of the Lawrence Hall of Science in Berkeley, California, back in the days when I lived in the USA for 5 years. I have been trying to track it down because I want to take my wife to see it, but it has been hard to find during this CoVid-19 lockout period. It was a transmission hologram of a room, a science laboratory, with a couple of people in it. To look at it it looked identical to looking through a window into a room bathed in green light but of course, when you looked at the other side there was no room there. It was truly one of the most remarkable things I have ever seen in my life. Transmission holograms look like a window with the subjects on the other side of it. One of the amazing things about them is that if you cut off a small portion of the hologram, say a piece near the top right corner, and look through it, you will see the entire scene of the hologram, but it is what you would see if you looked through the top right corner of the window. I don't know if you have made transmission holograms but they are very rich field of exploration in the world of holography. Thank you again. Michael
Hi Micheal, thanks you for your comment. What you say: > That would be amazing to make. And you are absolutely correct what I am describing here is a white light reflection hologram. I don't know how well the dcg process works with making transmission holograms. But it should be possible. I gotta check out this Lawrence Hall of Science in Berkeley
@@Holocreators My understanding is that the DCG process works well for transmission holograms. And (as you probably already know) it works well with high-powered pulsed lasers in the green-blue end of the visible spectrum. High-powered, pulsed lasers are needed to give the short exposure times (less than 1 mS or so) necessary to capture an interference pattern if there is a possibility that the subject might move (such as people). Exposure time can be calculated easily by estimating the possible maximum velocity of the subject ( (v) in microns (or whatever) per second). Assume that during the exposure the subject may not move a distance (s) more than about 1/4 to 1/10 of the wavelength of the light without messing up the exposure. That will give you you a velocity (v) and a distance (s) from which you can calculate exposure time (t). t=s/v Re Lawrence Hall of Science. My memory is foggy and I can't remember if that was where I saw that huge hologram. I'm about 75% certain but it was 40 years ago! I'm still asking around trying to find anyone who knows or remembers where it might be. And there was a serious earthquake in the area (Livermore Earthquake) in 1980 and there is a very possibility that that huge 1 x 1.5 m hologram was broken, but I hope not. Thank you again for your video lesson. It is very valuable.
@@michaelwalsh3482 Yes DCG can take a lot of laser light energy. In fact it needs it to make a proper hologram. Thats why the exposure times are at about 5 minutes with 100mw for even a small hologram. I can't imagine what kind of pulsed laser power one would need to record a hologram on dcg in a split second. I suppose it only works by making the pulse laser laser hologram on film and then transfering it to dcg. p.s: I hope that big hologram didn't break, did you ever send the museum an email and ask about it?
@@Holocreators Please help me understand the hologram film. Why can't a hologram be made on traditional photo positive film? According to the literature, there are two branches of holograms, the thick film and the thin film process. Why can't you get a hologram film or something similar that I can make in the shops?
43:37 so it was this white light Hologram i was thinking of during watching the video i think Yt channel The Thought emporium who have made video on similar topic but he used readymade photo sensitive glass ! He was talking about Siliver based photosensitive chemical right?
Now, I know why DCG holos are so expensive. So much work, and time go into the making of not only the holo, but the media to record it. I remember seeing a demonstration of potassium DCG holos being made at Lake Forest University, back in 91. Where I live, it won't be possible for me to make DCG holos, due to high humidity. I have a few DCGs in my collection. Thanks for sharing this with us. :)
واو 😍 احتراف فعلآ انت محترف 🤩👏🏻👏🏻👏🏻 دائمآ كنت اتمنى رؤية الطريقه و معرفة المده والمشقه التي يواجهها صانع الصور الهولوغرام المحترف شكرآ لك سيدي على مجهودك و على هذه المعلومات القيمه🙏🏻 اختك من الإمارات
Hello, as so many people have already said: Thank you so much for the best technical video about holograms on the internet. It really is invaluable. However, I'm confused about the direction of the lines at 1:00, it seems as if the painted arrow is perpendicular to the lines in the pattern? Instead of being parallel to them
thanks, yes perpendicular you are right, i have presented that in a confusing way. BUt there is basically only two directions the lines can be oriented. And even if you get that part wrong, it affects the final of the hologram only miminally, this is just to avoid internal reflections.
Wow was für eine Arbeit. Ich denke schon ewig an diese tollen Hologramme. Damals in den 90ern gab es eine kleine Verkaufsausstellung im Kaufhaus Karstadt. Ich wünschte es gäbe diese Dinge noch zu kaufen. Am liebsten hätte ich eine kleine Produktion und könnte sowas anbieten
This is astounding work. Thank you for sharing your expertise. I look forward to seeing your dream become reality. If an artist can put a stereo in the African desert that's playing Africa by Toto for eternity, then it's time we also have monumental desert holograms.
This video was recommended re: instructions for lenticular printing @home -and wow. This is incredible! You are incredible. Thank you for a most excellent presentation. 👍
Very interesting. 30+ years ago, I bought a hologram from a shop in Brighton, UK. I put it in with some papers when I moved to the US. I was looking for it recently and couldn't find it anywhere it should be. I'm coming to the conclusion that I probably ran across it about 10 years ago and it was spoiled and I threw it out. This video would seem to back that up. I was actually looking to see if I could replicate it (or something similar) and I found some various kits. Nothing looked quite right or needed point light sources etc but this seems the closest to the look that I remember. I don't recall the glass being that thick though. Then again, it was mostly hanging on my wall or in a box.
Hi, those holograms can last a long time, depending on the quality of the seal. But there are holograms that are made with different techniques than what i show here, so they don't vanish
@@Holocreators I recall it had already begun to fade a bit when I took it down to move. It was probably already 14 years old by then. I wish I had a clear memory of getting rid of it. I'm still holding a small hope that it will still show up.
I would be curious to see something about the advanced dichromate processing with the addition of methylene blue dye. It can work as photosensibilizer to extend the sensitivity range to 750nm, so the red lasers can be used, and so full-color RGB holograms are possible to make.
@@Holocreators I read about in in some scholar articles by Alexander Akilov and his colleagues. The tricky part is to get quality RGB laser triade (DPSS ones are the best, direct-diode modules are suitable too but needs to be thermally-stabilized and checked/modded for single-mode operation), and to adjust the right intensity ratios so the resulting hologram could have the right white balance. Also since MB-activated plates are exposed by red and yellow light, they need to be coated and dried in dark or weak light conditions (but possibly IR light and a VR headset with attached IR-mod webcam can fulfill the circumstance).
@@shoopdawhoop I think the lasers are not the issue, but the emulsion making, drying and development are all very challenging. On the old holographic forum I had seen some people needing to tinker a lot with the parameters to get a good hologram.
Terrific video. I have not done holography for more than 30 years now. At that time we used a doctor blade for coating. Why do you not use a doctor blade?
doctor blade seemed more difficult to get consistent results. but then again i might be wrong. especially for smaller holograms doctor blade is much faster i think. on big ones, spin coating seems to yield better results.
I agree that is always a good idea. Only problem with laser protection glasses is that you can't see the laser when using them, so therefore you could dial down the power of the laser during the setup and then ramp it up for the exposure.
That was crazy cool, definitely a protectionist. Now I'm wondering what one of these would be worth monetarily? A few hundred (U.S.) is my guess. Thanks for sharing your trade it was eye opening.
I Rob, great stuff to get into Holography. There is now Holography film that doesn't need chemical development. So if you want to get started I would get the Kit. This here is really an all DIY approach :-)
@@bla-w7z Hi Rob, when you start with holography you want to keep the number of variables as small as possible. Its difficult enough. So if you have film, that you know will work, that makes it much easier.
Amazing video!! Just so you know, you can get a cheap stove top pressure cooker and hook an air compressor hose to the top for an easy pressure pot for your epoxy.
That's a fantastic Idea, I head the epoxy is starting to bubble a lot, once you apply a vacuum to it. So you need to do it gradually. Did you observe the same with your pressure cooker setup?
Yes, I can vouch for the information being hard to find. I tried back in the days of HeNe lasers when only a very few artists were making them, but the available information was too scant. I did once see an exhibition of an art installation called "Heads" which rotated, each time changing the head that was visible. Abolutely amazing work. Thanks for the inspiration, I may actually make one now if I find time away from my latest passion of videography. 🙂
Well said! I enjoy making videos too. Holography is technically very challenging. But with new emulsions and cheaper and better lasers it will become easier and more accessible every year.
Hello, I wonder why you don´t need to put the laser on the vibration free table? I asume that if you do put it on another (not vibartion free) table is because the vibration or movement of the laser does not change the interference pattern registered on to the dcg emulsion, but I don´t understand why. Could you please help me undestanding why?. Thank you very much in advance, and great video. Best regards
Hi Artemio, thanks for your question. The only area that needs to be stable is between the plate and the object. Thats where the object beam and reference beam intersect. Thats where the "fringes" are created which make up the hologram. So the laser can be moved during exposure as long as its illuminating the object. :-) Kind regards. Swann
Dear Swann, Thank you very much for your fast reply. I´m realy interested in to make my first steps in the holography world and your video was the most reliable, detailed and acurate sourse I´v found on internet; so if you don´t mind I would like to make you some more questions: 1- Is the polarization filter mandatory? ( I don´t have one). 2- Can I avoid the use of the plane mirror and orientate the laser beam direct to the concave mirror? 3- Can the concave mirror be puted out of the vibration free table?. 4-Can I avoid the use of a concave mirror and just take out the laser´s colimation lens in order to get a spreaded beam?. Kind Regards. Artemio
Hi Artemio, 1. you do it very well without a polarization filter 2. yes you can orientate the expanded laser beam directly onto the object 3. the concave mirror doesn't need to be vibration-free. you can put it wherever you want. 4. yes, if you get an expanded beam that way you can do that. But be aware. For DCG only green and blue lasers will work and the light needs to be coherent
Excúseme, it´s me again :) So, if the laser can bemoved during the exposure, can I "Paint" the scene moving the laser beam? I´m asking that because I can not spread the laser beam too much, also "painting" the scene may be I can avoid some ring fringes coming out of the laser (because dots of dust in the laser lens I asume). Second: I have a blue laser and some photoresist film sheets (the ones used to make printed circuit boards), do you think those kind of photoresist are cabale to register a hologram? Finaly, do you have a Facebook page or email where i can send some pictures of my setup in order to get some feedback and recomendtions from you?. Best regrads. Artemio
@@artemiofava5754 Hello, yes you I think you can remove irregularities in the beam by moving the laser. But thats more advanced stuff. I would only do that after you have made good holograms by not moving the laser. With the photoresists I really can't help you. I know they are essential for making embossed holograms. But I don't know how they work. Check Jeffrey Weil www.linkedin.com/in/jeff-weil-49727b27/ he can help you with that. Expert on the matter. I do have a website. www.holocreators.com and also an email you will find there so feel free to contact me, I'd be happy to help.
This video really makes me want to try DCG but at at the same time makes me wonder if its worth the risk, seeing that it should be handled almost like anthrax. Regardless, thank you for sharing all that knowledge, not many do that to such extent and quality, might as well build some glove boxes so I can make such beautiful holograms, and maybe also do other kind of experiments that can make use of a glove box.
Great great!! 🎉 I put this video into my prefer video! Great explanation and such perfect holograms! Is true that if you cut in two parts this type of holograms, the pictire is not devide in two half parts but in each parts you could see the entire pictire?
Thanks, well its like a window to the outside world. When you make the window smaller you will still be able to see outside, but you have too look at steeper angles to see everything
Fascinating! I remember seeing one for the first time. It was a National Geographic from 1985 with a holographic image of the Taung child skull on the cover.
I have never seen that one, only the one with an eagle, I think that was also on the NG cover. 1985, quite some time ago and one year before I was born. Have a great day!
@@makkyd123 i really dont know, but trust me it works also without the polerization, try it without first, this is really a very small thing in the entire process and doesnt add a lot to the overall outcome
Because I can't find the laser configurations you mention in the video here in Brazil, does this configuration that exists here in Brazil work too? (Laser Point Green 5 Mw E 532 Nm) I don't understand laser, if this setting doesn't work, can you give me some that might work?
laser light needs to be coherent, difficult to say if that is the case with your laserdiode, easiest to just try it out, if you can make a hologram, then you know the light is cohrerent
Absolutes Wow. So eine qualität an Video ist nicht zu toppen. Ich habe gesehen das es ein Set für Hologrambilder in USA zu kaufen gibt aber das zu bekommen ist einfach unmöglich. Dann hab ich das hier gesehen. Einfach Wahnsinn. Ich würde gerne ein Hologramm erstellen aber das hier ist echt heftig. Erstellt ihr noch welche?
great video! I understand the dcg process much better now. Can you explain why you scrape the hologram, rather than just masking it for display (in a frame?). Thanks!
This is one of those "If it was easy, everyone would be doing it". It must have taken a huge amount of time to work out the details of this procedure. Even with your exact instruction, replicating the process is not trivial.
This video documenting your procedure is excellent, you have my respect.
thankyou. yes it was an enormous task to create this video
Yeah ..
@@Holocreators yes we could realized that. yes it was a great and hard task
It's only because the control circuitry for such spinning displays are now available so you don't have to build a control circuit to do it anymore, at worst you would just have to download some public domain software for something like an arduino or pi computer. I remember buying a battery hand fan that had such a display.
This is the first time I've downloaded a youtube video just to back it up in case the internet is shut down or something... just amazing!
Thank you Pangamini. If you have any questions about the Holography-process feel free to send me an email at info@holocreators.com
@@Viking009 Depending on where you put the plate relative to the beam and object its easy to create a transmission hologram. The DCG-Hologram really works best with the single beam denisyuk recording setup that I have shown here.
@@Holocreators What I did was a denisyuk style, just placed vertically. The subject was behind the plate, but the table in front was also illuminated by the spread beam. I ended up recording the front side table as a transmission hologram instead of a reflection of the subject on the other side. I didn't expect that, really.
Anyway I am not using DCG, as I could only get a red 20mW diode, so I've been experimenting with both PFG-01 and PFG-03 plates
@@Viking009 yes using the pfg plates is a good idea if you just have red. Also when starting out you learn the craft easiert when you know that the holographic plates will perform well every time
🤣🤣🤣 #amazingtoo
this is by far the best technical insight I've ever seen on youtube. keep up the good work!
Thank you very much
Wow. That's dedication. This is what humans should be striving for. The passion you exhibit is admirable. Well done.
Thank you Mark, much appreciated.
Finally a video that walks thru the process in good detail. I’ve been looking for video tutorials on holography for years. Thanks for the effort and sharing your knowledge and experience.
Thanks man. Happy that you like it.
Amazing tutorial. The process is actually less complicated than I worried it may be. Very helpful.
This is really incredible. What an awesome resource this single video is. Fantastic work, though that doesn’t do justice to the work you’ve clearly put in here. Thank you.
what do you mean by " justice to the work" please explain I want to be clear, why justice is because the doer is revealing all the depth of his work?
I learned about holograms in books as a young child (where I learned you need to minimise vibration in your studio!) and saw my first ones in a museum wayy back in the 80s. I've learned about them in science class. I'm no genius but I do have a fair grasp on some physics including some quantum mechanics and rudimentary signal theory, but for the life of me, no matter how hard I've tried over the last 30-odd years, I cannot understand *how* a hologram manages to manipulate the light to reproduce that 3D effect, and it's clear that no teacher I've asked actually understood it, either. Sure, read up on it, it's "interference patterns" yada yada.. but it still doesn't make sense. It's just mindblowing. Your example hologram at the end is amazing. The 3D structure actually obstructs itself as you turn it around. Incredible.
for me its just the same. I understand the principal behind it, but what really happens on a molecular level is beyond me ;-) Well luckily you can still make a hologram without understanding everything about it
I doubt twenty five minutes of my time will suddenly cause you to understand but I can at least try to explain how I understand it. First concept is the idea of a plane wave, I believe you 'get' the whole light as a wave thing and a plane wave is just coherent light, a bunch of waves all marching in step in the same direction. In 2 dimensions it may help to visualize it as rows of really parallel, regular, and straight ocean waves. Second concept is the reflection of those waves off of an object. If the object is rigid and stationary on the scale less than micrometers, and the plane wave is regular the light reflected off of it will be constant and deterministic, the light coming off the object isn't random and is exactly as stable as the plane wave and the object it is coming from. This reflected light contains all of the information of what the illuminated surface of the object 'is', and it is way more than what we actually see (it's the information of all there is TO see). Third concept is interference, the incoming plane wave and the resulting reflection are going to superimpose. Because the plane wave is coherent (and also monochromatic) and the reflection is not random, a standing wave field is going to develop. There are going to be locations in the volume of the intersection between the incoming plane wave and the reflected light where there is less electric/magnetic field variation (nodes) and places with more variation (anti-nodes). Note: I say less rather than no only because the reflected light is going to have on average less amplitude than the incident plane wave because of the 1/r^2 relationship, this is also why in this setup the film has to be as close to the work piece as possible to try and keep the ratio of light intensity as even as possible (keeping the nodes as 'dark' as possible). Fourth is the really cool thing, diffraction, If you figure out where all of those anti-nodes are and put a little bit of black stuff there (nano-meters in size) and then shine the original plane wave in the same orientation on that meticulously created pattern of anti-nodes, the plane wave actually diffracts off of all those black things in the exact way to recreate the originally reflected image. I'm guessing this is the part where the WTF comes in, all I can really do is try to explain how I rationalize it. The interference pattern is deterministic, the 'only' way to create it is to have the plane wave and the reflected wave interfere. But it was created, and now you are forcing the plane wave into the interference pattern and it can't continue to exist as a plane wave after it interacts with all that stuff, the only way for it to exist in that shape is to recreate the reflected light. Its a bit like saying A+B=C then taking A-C and the only thing you can get is -B where A is the plane wave, B is the reflected light and C is the interference pattern (the negative is identical as a positive for light basically and the whole node vs anti-node thing is the same as + or - B so just let me hand-wave that away as unnecessary for my point). When it comes to making the hologram what you are capturing is the interference pattern, i don't know the chemistry of it for the dichromate, but the nodes and anti-nodes are being encoded into the Volume of the gelatin exposing the dicrhomate. It essentially builds that matrix of little bits of stuff all through the gelatin exactly reproducing the interference pattern. So yeah, then he goes through the process of developing the dichromate, again i don't know the chemistry, so that the encoded pattern interacts with visible light instead of being transparent to it and then there is a hologram. The last bit of hand-wavy stuff is the sun and most 'point' sources of light behave enough like a plane wave for the reconstruction of the object to look basically like the original to our eyes, and the fact that it is not monochromatic and it still works goes to trigonometry (for this type of hologram: Denisyuk) where if you change the angle of the incident light the hologram will change colors something something cosines. \WALL OF TEXT
@@MaxIV77 OMG, that's a big ole mess. Don't overthink this. A hologram is just the wavefront from an object, referenced to a coherent wavefront, by optical interference (the same property that makes an Interferrometer work). The interference exposes the medium with millions of fringes. If you look at a holographic medium under a microscope, it all makes sense. You'll see complicated patterns of lines all crashing into each other. If you block the reference beam, and just expose the medium with the light coming off the subject, you won't get a hologram. Seems easy to me.
@@MaxIV77 New to the subject matter. Thanks for a superb explanation that made intelligible the whole process.
@@Holocreators At the end, while you turned the hologram backside and it shown the inverted object parallax, this gave me a hint to how people create holograms where the object appears to be at the front of the glass (or cutting through it) and not behind the glass.
...They just make the hologram of the hologram turned backside at the desired distance, and turning it backside to reveal the original parallax. So, the copied hologram will have the object shifted towards the observer:)
I was a kid in the 90’s. I appreciate this artwork so much. I never knew the process until now. Thank you for teaching us.
You are so welcome!
thank you,
made my first holo's, in 76' 77 ( still have them ) with Fred Unterseher in berkley,ca. met Richard Rallison and saw his first dicromates. WOW rich said he burned down his dads barn learning to make DCG's . most people have never seen a real holo on glass and fewer have seen DCG bought some DCG's from holo's gallery on haight street in san francisco early 90's
they are beautiful your vid is a master work....Gary
Hi, Gary. Thanks for the compliment. If I understand correctly, Richard Rallison was the first person doing DCG holograms. I met Fred in Santa Fee some years ago. Very kind man. All that IPA with its fumes is a huge fire hazard, I can understand why Rich burned down the barn.
Hi Gary. Thank you for your comments.
Can you please contact me on mike.walsh.1955@gmail.com?
I am trying to find (remember where I saw) a huge hologram. It was somewhere in the east SF bay in about 1979 or 1980. You might have seen it or know someone who has seen it and knows where it is, or if it still exists (40 years ago)? Or if it survived the Livermore earthquake(s) of 1980?
I think it was about 1 metre x 1.5 or 2 metres? It is a green transmission hologram of a room. Absolutely stunning! I've never seen anything like it before or since.
Like you, a friend and I, made our first holograms in the late 70s (1978). We used a 5 mW HeNe laser borrowed from a high school in San Rafael. Made transmission holograms. Great fun but a real challenge to get them right.
I have been trying to find where this huge hologram was/is located so I can take my wife to see it. Maybe Berkeley? Maybe Lawrence Hall of Science? Maybe Lawrence Livermore Museum?
I would greatly appreciate any hints or clues you might be able to give me.
Thank you
Mike
God bless you for making this and sharing. You have a good heart.
Thank you Jasper, very kind :-)
Hearty thanks to making this resource freely available!!!
You're most welcome!
While watching the video, I interrupted several times to google the components and the experiment room.) Thanks for sharing the technology. Everything is very detailed and all conditions are taken into account.
Thank you, glad you liked it.
This is the best video on UA-cam
thanks ;-)
@@Holocreators The amount of knowledge packed into this video is amazing. I can't imaging how much work went into learning all this. But, even more heroic than this is the generosity of sharing it. Thank you so much!
One of the best videos I've seen on UA-cam. Especially love all of the DIY laboratory equipment.
thank you
Wow! I don't know anything about what I just watched but I couldn't stop watching. I can't imagine having the patience and skill to do this myself. Bravo to you for making this tutorial.
Thank you, have a wonderful day. ;-)
I am bowing to you MAN!
thank you
Such a wonderfully detailed and thorough description of your process. You once again have demonstrated German commitment to quality. Unfortunately after watching the process I have decided that I am not equipped to take on DCG hologram production, but I have a new appreciation of how much these final products are truly worth. Great work!
thanks for your comment, I am very happy you liked it.
Watched the whole video start to finish, very informative, and honestly impressive ingenuity on the chemical chambers you made! Thank you for making this. 🍄💙
thank you for commenting that you liked it.
You deserve a medal 🏅
THanks man :-)
Thanks for this video!! amazing detail. I am currently following your instructions and trying to make my own hologram. One quick question, for your fixer you are using "Tetenal Superfix Plus Rapid Fixer 1l" correct? Also Is there a place we can purchase holograms you have made? Thanks for your response!
Hi, yes thats the fixer I am using. Unfortunately I am not selling any holograms.
Did you ever successfully make one?
Thanks for putting this video together, so valuable. I'm not sure if I will ever make a hologram but if I do I know where to look. Very impressive. And good luck with the 2 meter hologram!
Thank you very much.
after 15 min of the video i just gave up on hope that I might one day make or try the process on day ! but I just couldn't not to watch till the end of it in respect of your amazing and in detail explanation and even the environment and workshop that you created for such a sensitive material and processing technique just blown my mind and it shows how much you achieved mastering it ! big holoheart and respect to you and your work
thanks for the kind words Artin
The labor of love is incredible!!! I learned several technics for other projects that i do. As you said if you only had this video in the beginning
Thank you Ronald.
What an incredibly great video! Thank you! The technique for making glove boxes is extremely useful in itself.
thank you Scott, much appriciated
@@Holocreators Your homemade contraptions rule!
Seems like you just need bigger fluid holding tubs and glove boxes, and tools, just bigger everything to achieve your dream. I would love to see this hologram in the desert. Thank you for all your dedication and passion and hard hard work in getting this info to us. I am starting a company soon and my ultimate goal right now is to get a hologram on something you've probably never seen a hologram on before. I know it's not going to be easy and I'll probably fail 1000 times before it works. I might have some questions in the future, you will be my main guy to ask if I hit some road blocks. I hope to hear from you in the future. Thanks!
im so excited to start developing holograms. this video is a masterpiece for me. i feel so much gratitude
Thank you David
i don't know much about holograms, but this is the best tuto i've seen. Congrats
thank you you Pierre
Thank you for making such a clearly defined procedural map. Excellent work.
your very welcome, happy you liked it
Amazing details, I am not in making holograms, but I watched from the start to finish, wishing you all the best and your dream come true.
thank you very much
Great tutorial method. Wish they were all so clearly presented. Good job.
thanks Jeff
Came across your video after seeing a hologram of a card, seeing if it was possible to create one myself. After watching it I can conclude that doing it myself will be "kinda hard", even if I had access to all those tools and materials. Probably going to commission one instead for my current hobby (a collectible card game) and keep this video around if I ever want a new expensive hobby because of how detailed and well-explained everything is. Respect
thank you, yes its a difficult thing to do
This is some serious level of detail, very impressive
thank you Eldritch
Actually, I came across this video by accident, but it was so interesting that I kept watching. Great work, very detailed and well told. I am looking forward to see how you will handle making a 2 by 1 meter hologram.
thanks. happy you liked it. yeah I am still excited about the big holograms
Truly amazing work here, the variety of options even presented to create this process is incredible. Thank you for this resource!!
Thank you Madison
Thank you for such a perfectly articulated instruction..details that are mandatory were not neglected and i am so grateful that ypu would take the time to deliver this information with such detail and perfection..i think you gather how thankfull i am for what you've gifted here..you rock this concept!
cool happy that it was helpful to you
Wow, what an interesting and in-depth video of your process. Very impressive.
Thank you very much Ron.
Swann, this is a masterwork! When I last did holographry in college, we had a Newport table on top of wool and inner tubes, a magnetic long bore gas laser, spatial filters, polarizers, beam splitters and balancers, dark rooms, stopwatches, and pricey Kodak film. I love your exposure setup, you make it look easy.
Thanks. The exposure setup is rather simple yes. Its just the denisyuk setup. With 3 contact points that offers the most stability.
This is one of the best videos on youtube. Thanyou
thank you very much for your kind words, have a great day.
Impressive amount of data and details. Absolutely incredible content. Cheers and great work.
Thank you very much.
Thanks for the well demonstare . Its one of the great lecture over hologram devloping.
You are welcome!
Quite astonishing video, thanks so much! A wonderful breakdown of the process - just excellent. I had a try at making some DCG holograms in the mid/late 70's with some success but with nowhere near the uniformity of the results here in this video. Also, Rich Rallison did a wonderful job in the 1970's of industrializing the DCG process with his IDC company in Salt Lake City, which I had a chance to visit in the late seventies.
Fantastic. Rich Rallison is the father of it all it guess. He taught everybody else. Must have been a very interersting charachter. Would have loved to meet him.
Thank you for this excellent presentation. I can truly appreciate it because a friend of mine and I made our first holograms at home in 1978, and, as you have told the story here so well, it was not an easy task. It was very difficult.
Your hologram is a reflection hologram, or sometimes called a "white light hologram" because it can be viewed with any white light.
My friend and I made transmission holograms, and they need to be illuminated with laser light of the same frequency that was used to make them, in order to be viewable. But they were remarkable!
You dream of a 1 metre x 2 metre hologram?
It has been done. I have seen one. It was in about 1979 or 1980.
I remember it as being about 1 metre high x 1.5 metres wide.
I do not recall exactly where I saw it though (40 years ago now!) but I think it was in the museum of the Lawrence Hall of Science in Berkeley, California, back in the days when I lived in the USA for 5 years. I have been trying to track it down because I want to take my wife to see it, but it has been hard to find during this CoVid-19 lockout period.
It was a transmission hologram of a room, a science laboratory, with a couple of people in it. To look at it it looked identical to looking through a window into a room bathed in green light but of course, when you looked at the other side there was no room there.
It was truly one of the most remarkable things I have ever seen in my life.
Transmission holograms look like a window with the subjects on the other side of it. One of the amazing things about them is that if you cut off a small portion of the hologram, say a piece near the top right corner, and look through it, you will see the entire scene of the hologram, but it is what you would see if you looked through the top right corner of the window.
I don't know if you have made transmission holograms but they are very rich field of exploration in the world of holography.
Thank you again.
Michael
Hi Micheal, thanks you for your comment. What you say: >
That would be amazing to make.
And you are absolutely correct what I am describing here is a white light reflection hologram. I don't know how well the dcg process works with making transmission holograms. But it should be possible.
I gotta check out this Lawrence Hall of Science in Berkeley
@@Holocreators My understanding is that the DCG process works well for transmission holograms. And (as you probably already know) it works well with high-powered pulsed lasers in the green-blue end of the visible spectrum.
High-powered, pulsed lasers are needed to give the short exposure times (less than 1 mS or so) necessary to capture an interference pattern if there is a possibility that the subject might move (such as people). Exposure time can be calculated easily by estimating the possible maximum velocity of the subject ( (v) in microns (or whatever) per second). Assume that during the exposure the subject may not move a distance (s) more than about 1/4 to 1/10 of the wavelength of the light without messing up the exposure. That will give you you a velocity (v) and a distance (s) from which you can calculate exposure time (t). t=s/v
Re Lawrence Hall of Science. My memory is foggy and I can't remember if that was where I saw that huge hologram. I'm about 75% certain but it was 40 years ago! I'm still asking around trying to find anyone who knows or remembers where it might be.
And there was a serious earthquake in the area (Livermore Earthquake) in 1980 and there is a very possibility that that huge 1 x 1.5 m hologram was broken, but I hope not.
Thank you again for your video lesson. It is very valuable.
@@michaelwalsh3482 Yes DCG can take a lot of laser light energy. In fact it needs it to make a proper hologram. Thats why the exposure times are at about 5 minutes with 100mw for even a small hologram. I can't imagine what kind of pulsed laser power one would need to record a hologram on dcg in a split second. I suppose it only works by making the pulse laser laser hologram on film and then transfering it to dcg.
p.s: I hope that big hologram didn't break, did you ever send the museum an email and ask about it?
@@Holocreators Please help me understand the hologram film.
Why can't a hologram be made on traditional photo positive film? According to the literature, there are two branches of holograms, the thick film and the thin film process. Why can't you get a hologram film or something similar that I can make in the shops?
43:37 so it was this white light Hologram i was thinking of during watching the video i think Yt channel The Thought emporium who have made video on similar topic but he used readymade photo sensitive glass ! He was talking about Siliver based photosensitive chemical right?
yes probably silver film
Sir, I appreciate you to achieved your desire to showing us for your crazy achievements. You are really wonderful god bless you.
So nice of you, thank you very much.
You are advanced mate! I I just finished up creating an infinity holographic room. It was my first one and it is intense
Thank you.
Now, I know why DCG holos are so expensive. So much work, and time go into the making of not only the holo, but the media to record it. I remember seeing a demonstration of potassium DCG holos being made at Lake Forest University, back in 91. Where I live, it won't be possible for me to make DCG holos, due to high humidity. I have a few DCGs in my collection. Thanks for sharing this with us. :)
Thanks Thomas, I heard a lot about about Lake Forest Holography, must have been great.
@@Holocreators Yes, it really was an awesome learning experience. :)
This is the most amazing video on the topic I have ever seen. Thank you!
thank you Ivan
واو 😍 احتراف
فعلآ انت محترف 🤩👏🏻👏🏻👏🏻
دائمآ كنت اتمنى رؤية الطريقه و معرفة المده والمشقه التي يواجهها صانع الصور الهولوغرام المحترف
شكرآ لك سيدي على مجهودك و على هذه المعلومات القيمه🙏🏻 اختك من الإمارات
Thank you very much. All the best to the UAE :-)
Hello, as so many people have already said: Thank you so much for the best technical video about holograms on the internet. It really is invaluable.
However, I'm confused about the direction of the lines at 1:00, it seems as if the painted arrow is perpendicular to the lines in the pattern? Instead of being parallel to them
thanks, yes perpendicular you are right, i have presented that in a confusing way. BUt there is basically only two directions the lines can be oriented. And even if you get that part wrong, it affects the final of the hologram only miminally, this is just to avoid internal reflections.
Wow was für eine Arbeit. Ich denke schon ewig an diese tollen Hologramme. Damals in den 90ern gab es eine kleine Verkaufsausstellung im Kaufhaus Karstadt. Ich wünschte es gäbe diese Dinge noch zu kaufen. Am liebsten hätte ich eine kleine Produktion und könnte sowas anbieten
hi, danke für deine nachricht. sehr schade dass es diese nicht mehr karstadt gibt, aber vielleicht kommt die mode ja wieder auf
This is astounding work. Thank you for sharing your expertise. I look forward to seeing your dream become reality. If an artist can put a stereo in the African desert that's playing Africa by Toto for eternity, then it's time we also have monumental desert holograms.
Haha Thank you Mr. Burns ;-) Kind regards. Swann
This video was recommended re: instructions for lenticular printing @home -and wow. This is incredible! You are incredible. Thank you for a most excellent presentation. 👍
thank you Janell, happy you liked the video. Kind regards. Swann
Very interesting. 30+ years ago, I bought a hologram from a shop in Brighton, UK. I put it in with some papers when I moved to the US. I was looking for it recently and couldn't find it anywhere it should be. I'm coming to the conclusion that I probably ran across it about 10 years ago and it was spoiled and I threw it out. This video would seem to back that up. I was actually looking to see if I could replicate it (or something similar) and I found some various kits. Nothing looked quite right or needed point light sources etc but this seems the closest to the look that I remember. I don't recall the glass being that thick though. Then again, it was mostly hanging on my wall or in a box.
Hi, those holograms can last a long time, depending on the quality of the seal.
But there are holograms that are made with different techniques than what i show here, so they don't vanish
@@Holocreators I recall it had already begun to fade a bit when I took it down to move. It was probably already 14 years old by then. I wish I had a clear memory of getting rid of it. I'm still holding a small hope that it will still show up.
Yes by far best vid ever very well done i wish there where more videos like this
Thank you very much.
Many many many thanks for kind sharing your long time gained detailed experience. Thank you.
So nice of you, thank you.
Hats off your hard work.
thank you
I would be curious to see something about the advanced dichromate processing with the addition of methylene blue dye. It can work as photosensibilizer to extend the sensitivity range to 750nm, so the red lasers can be used, and so full-color RGB holograms are possible to make.
Hi. I had looked into it a long time. Was it MBDCG? It sounded very challenging.
@@Holocreators I read about in in some scholar articles by Alexander Akilov and his colleagues. The tricky part is to get quality RGB laser triade (DPSS ones are the best, direct-diode modules are suitable too but needs to be thermally-stabilized and checked/modded for single-mode operation), and to adjust the right intensity ratios so the resulting hologram could have the right white balance. Also since MB-activated plates are exposed by red and yellow light, they need to be coated and dried in dark or weak light conditions (but possibly IR light and a VR headset with attached IR-mod webcam can fulfill the circumstance).
@@shoopdawhoop I think the lasers are not the issue, but the emulsion making, drying and development are all very challenging. On the old holographic forum I had seen some people needing to tinker a lot with the parameters to get a good hologram.
Gotta love the German attention to detail! 🙃
Thank you :-)
What an incredible video. The effort and passion for the subject is astounding. Bravo to you Sir!
Thanks
Fantastic video, total respect for sharing your massive experience 👏
My pleasure!
Amazing work. Loved watching it. I hope you get to make that big desert hologram one day :)
thank you very much, still dreaming about it
Floored
Absolutely incredible
Wow
Thank you, I am happy you enjoyed it.
Terrific video. I have not done holography for more than 30 years now. At that time we used a doctor blade for coating. Why do you not use a doctor blade?
doctor blade seemed more difficult to get consistent results. but then again i might be wrong. especially for smaller holograms doctor blade is much faster i think. on big ones, spin coating seems to yield better results.
Thanks for making this. I would have thought there to be 2 lasers for the 3d effect
cool happy to clear that up, just one laser is needed.
Very extensive explanation. Very well done. But during exposure make sure to use some protection glasses against the laser.
I agree that is always a good idea. Only problem with laser protection glasses is that you can't see the laser when using them, so therefore you could dial down the power of the laser during the setup and then ramp it up for the exposure.
Amazing generous work congratulations
Thank you very much
Could you do this to an automobile windshield using a larger object?
Hello, this would be possible, but it would requiere a big production floor.
Thank you,
It is very hard for me to come up with a formula, this makes it posable for me!
Happy to help!
Danke Sven, tolles Video und geniale Anleitung. Man merkt mit jedem Wort wie passioniert du mit/bei deinem Projekt bist, großartig!
That was crazy cool, definitely a protectionist. Now I'm wondering what one of these would be worth monetarily? A few hundred (U.S.) is my guess. Thanks for sharing your trade it was eye opening.
Good question! Only market I would know is jewellery or art. Then the prices are up to the artist.
Thanks so much for this. I did custom color photography years ago, but always wanted to do this.
happy you liked it, you should give this a try.
Wow, an amazing video. There is something very magical about these holograms. It's incredible how much work goes into making them. Great work!!
thank you Elliott
I wonder what you would say about the liti color kits. I have been considering one.
I Rob, great stuff to get into Holography. There is now Holography film that doesn't need chemical development. So if you want to get started I would get the Kit. This here is really an all DIY approach :-)
It is an expensive kit, so it is great to get the approval from you! Thank you kindly for your time!
@@bla-w7z Hi Rob, when you start with holography you want to keep the number of variables as small as possible. Its difficult enough. So if you have film, that you know will work, that makes it much easier.
Wow, that was more epic than a trip to Mordor. Great work.
thank you
O
Many thanks for sharing this! What is the function of the rotatable polarization filter here? I assume that the laser source is randomly polarised?
Sorry I forgot, it has been a long time.
Amazing video!! Just so you know, you can get a cheap stove top pressure cooker and hook an air compressor hose to the top for an easy pressure pot for your epoxy.
That's a fantastic Idea, I head the epoxy is starting to bubble a lot, once you apply a vacuum to it. So you need to do it gradually. Did you observe the same with your pressure cooker setup?
Thank you for this excellent video. I'm impressed by your work. Simply: Wow!
Thank you. Very happy that you liked it.
What colour light should I be working in when making the plates?
yellow or red. but yellow is more comfortable for you to work in.
@@Holocreators can you keep the excess geletin+dichromate mixture? thanks
I hope this video provides all info how make such at home.
Edit: step 5...
too risky to experiment at home...
yes, please be careful.
Is it possible to have a hologram projection come from glass laying flat? Without the need to look through glass to see the hologram?
no thats not possible
@Holocreators why is that? Surely there's a way.
@@Holocreators light field labs did it
Yes, I can vouch for the information being hard to find. I tried back in the days of HeNe lasers when only a very few artists were making them, but the available information was too scant. I did once see an exhibition of an art installation called "Heads" which rotated, each time changing the head that was visible. Abolutely amazing work. Thanks for the inspiration, I may actually make one now if I find time away from my latest passion of videography. 🙂
Well said! I enjoy making videos too. Holography is technically very challenging. But with new emulsions and cheaper and better lasers it will become easier and more accessible every year.
Is it enough to replace the fixer with just the lab-grade sodium dithionite, or other chemicals should be used/added?
sorry i don't know
Hello, I wonder why you don´t need to put the laser on the vibration free table? I asume that if you do put it on another (not vibartion free) table is because the vibration or movement of the laser does not change the interference pattern registered on to the dcg emulsion, but I don´t understand why. Could you please help me undestanding why?. Thank you very much in advance, and great video. Best regards
Hi Artemio, thanks for your question. The only area that needs to be stable is between the plate and the object. Thats where the object beam and reference beam intersect. Thats where the "fringes" are created which make up the hologram. So the laser can be moved during exposure as long as its illuminating the object. :-) Kind regards. Swann
Dear Swann, Thank you very much for your fast reply. I´m realy interested in to make my first steps in the holography world and your video was the most reliable, detailed and acurate sourse I´v found on internet; so if you don´t mind I would like to make you some more questions: 1- Is the polarization filter mandatory? ( I don´t have one). 2- Can I avoid the use of the plane mirror and orientate the laser beam direct to the concave mirror? 3- Can the concave mirror be puted out of the vibration free table?. 4-Can I avoid the use of a concave mirror and just take out the laser´s colimation lens in order to get a spreaded beam?. Kind Regards. Artemio
Hi Artemio,
1. you do it very well without a polarization filter
2. yes you can orientate the expanded laser beam directly onto the object
3. the concave mirror doesn't need to be vibration-free. you can put it wherever you want.
4. yes, if you get an expanded beam that way you can do that. But be aware. For DCG only green and blue lasers will work and the light needs to be coherent
Excúseme, it´s me again :) So, if the laser can bemoved during the exposure, can I "Paint" the scene moving the laser beam? I´m asking that because I can not spread the laser beam too much, also "painting" the scene may be I can avoid some ring fringes coming out of the laser (because dots of dust in the laser lens I asume). Second: I have a blue laser and some photoresist film sheets (the ones used to make printed circuit boards), do you think those kind of photoresist are cabale to register a hologram? Finaly, do you have a Facebook page or email where i can send some pictures of my setup in order to get some feedback and recomendtions from you?. Best regrads. Artemio
@@artemiofava5754 Hello, yes you I think you can remove irregularities in the beam by moving the laser. But thats more advanced stuff. I would only do that after you have made good holograms by not moving the laser. With the photoresists I really can't help you. I know they are essential for making embossed holograms. But I don't know how they work. Check Jeffrey Weil www.linkedin.com/in/jeff-weil-49727b27/ he can help you with that. Expert on the matter. I do have a website. www.holocreators.com and also an email you will find there so feel free to contact me, I'd be happy to help.
Swann Rack, to add dichromate, can I add it using the red light I have at home? I noticed the light you use is yellow.
yellow or red they both work fine. just don't use blue white or green
What about pure gold leaf micro particles. Or even Mercury?
Used for what?
How do magazine have full holographic covers?
there is different ways to make and print holograms. holograms can be embossed into plastic film, thats how they are printed on magazines.
This video really makes me want to try DCG but at at the same time makes me wonder if its worth the risk, seeing that it should be handled almost like anthrax. Regardless, thank you for sharing all that knowledge, not many do that to such extent and quality, might as well build some glove boxes so I can make such beautiful holograms, and maybe also do other kind of experiments that can make use of a glove box.
Be careful with DCG.
Great great!! 🎉 I put this video into my prefer video! Great explanation and such perfect holograms!
Is true that if you cut in two parts this type of holograms, the pictire is not devide in two half parts but in each parts you could see the entire pictire?
Thanks, well its like a window to the outside world. When you make the window smaller you will still be able to see outside, but you have too look at steeper angles to see everything
@@Holocreators thank you :)
Last question: are you able to generate a short "movie effect ", not only 3D rotation object?
@@emanuele_dascanio with digital holography yes, so you would need to make the master digitally, and then you could copy it to DCG if you like.
@@Holocreators amazing, thank you very much
Hi, could you tell me which laser model you are using? Or if you can tell me some basic green laser I can buy for DCG.
i have still one here, I could sell you mine if you want. maybe you can write me an email to info@holocreators.com
Fascinating! I remember seeing one for the first time. It was a National Geographic from 1985 with a holographic image of the Taung child skull on the cover.
I have never seen that one, only the one with an eagle, I think that was also on the NG cover. 1985, quite some time ago and one year before I was born. Have a great day!
can you explain what polarizer is used to adjust the laser?
sorry I don't know what polarizer was used, but maybe you find something online. its a laser with a wavelength of around 532
@@Holocreators so you aren't sure what general type it is? how would you describe it if you wanted to obtain one?
@@makkyd123 polerization filter for laser
@@Holocreators I think what you have got there is a half-wave plate maybe?
@@makkyd123 i really dont know, but trust me it works also without the polerization, try it without first, this is really a very small thing in the entire process and doesnt add a lot to the overall outcome
Very impressive! Well done!
Thank you
Because I can't find the laser configurations you mention in the video here in Brazil, does this configuration that exists here in Brazil work too? (Laser Point Green 5 Mw E 532 Nm) I don't understand laser, if this setting doesn't work, can you give me some that might work?
laser light needs to be coherent, difficult to say if that is the case with your laserdiode, easiest to just try it out, if you can make a hologram, then you know the light is cohrerent
I also wondered about your lighting - at which points in the process do you need to be working under a safe light?
hi, safe light is needed whenever the chrome is inside the gelatin, because thats when its light sensitive.
Absolutes Wow. So eine qualität an Video ist nicht zu toppen. Ich habe gesehen das es ein Set für Hologrambilder in USA zu kaufen gibt aber das zu bekommen ist einfach unmöglich. Dann hab ich das hier gesehen. Einfach Wahnsinn. Ich würde gerne ein Hologramm erstellen aber das hier ist echt heftig.
Erstellt ihr noch welche?
Hi, aktuell erstellen wir keine. Vielleicht irgendwann mal wieder. Viele Grüße
wow that process looks good :)
thanks soft dreams
Excellent tutorial!
Glad you liked it!
This was pleasant to watch, and very interesting. I'm really impressed.
Also your presentation style got some Applied Science (a channel on YT) vibes.
Thanks for recommending that channel, its awesome, great find, I instantly subscribed :-)
great video! I understand the dcg process much better now. Can you explain why you scrape the hologram, rather than just masking it for display (in a frame?). Thanks!
well it needs to be sealed from moisture.