Great job! When I worked with a fs-pulsed spectrometer I offered to make a video like this explaining it, but was told there was too much other work to do! I think you did a great job!
I have a question @09:50 when the pump is blocked it should show the spectrum of ground-state species but in this case, the spectrum goes away altogether. Why?
They are not measured, but you know the delay based on the total change in length of the delay line, from which you know what time the it takes for light to go through (given that the speed of light is constant and in aire roughly equal to that in air with little dispersion).
Great video! Perfect for beginners in laser and spectroscopy graduate corse...good job!
The presentation is very clear and well organized.
Great job! When I worked with a fs-pulsed spectrometer I offered to make a video like this explaining it, but was told there was too much other work to do! I think you did a great job!
Very clear explanation. Thank you.
This is a superb explanation and examplification of the principles - well done
Thanks, lads! Helped me a lot. I saw the 2D spectroscopy for the first time and I was like what the hell? Now I get it.
Very clear demonstration of the technique!
Excellent video, very clear. Thank you
Very helpful and useful for student who are using the TAS
It's quite easy to understand! Thanks so much!
Thank you very much, just what i needed right now, very good explanation.
How to analyze the data from the software.
If I take a screenshot of a particular part of this video and use it as a schematic diagram in an academic paper, how do you want me to cite this?
where is the smile button haha
this video said cearly and experiment is easy to understand. thank you so much
Very good explanation. Thank you.
thanks, good job, how i can convert micro joule into GW/cm2
Thank you for the video. However, how you define the starting point ? how do you put it ? Thank you.
Awesome explanation !!
Thank you for the clear explanation!
It's really easy to understand
Nice introduction! May I know the crystal that you use for generating the white light of IR and UV range?
Excellent !
Really awesome! thanks a lot
How much do the laser and optical parametric amplifier cost?
great explanation. got most of it. thanks joel.
Thank you sir, you made it easy....
I have a question @09:50 when the pump is blocked it should show the spectrum of ground-state species but in this case, the spectrum goes away altogether. Why?
If I understand right, that’s change of spectrum went away
it's very good explanation to learning students ...thanks...
Great explanation, Thank you
great explanation❤
Please make a movie of this!
Very helpful and awesome! Thanks heaps!
its really really awesome !!!!!!
so helpful
what kind of filter is use to remove 800 nm residue ? What is the spectrum look like without the 800 nm filter( at 8:18 min) ? thank you
Top Knotch Explanation
great description..thanks u for posting...
can someone plz explain why excited state absorption was positive?
The plot is three dimensional?
Amazing video thank you
baichhabi yakami: We use a short-pass 750 nm filter to remove (or suppress) the residual 800 nm light. Removing the filter will saturate detector.
I love you my man
awesome, thank you so much
Omg thank you so much
Nice Video...Thanks
Thanks..really helpful...
How can you measure picoseconds?
They are not measured, but you know the delay based on the total change in length of the delay line, from which you know what time the it takes for light to go through (given that the speed of light is constant and in aire roughly equal to that in air with little dispersion).
thank you
Thanks
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this is exactly zewail's experiment
Great explanation. Thank you
How to analyze the data from the software.