Unit 4thOne shot Laser (BAS101/BAS 201)by Lalit Rathi sir

[@paramaanand3069]

Thanks sir

[@SIH_DDAS_2024]

Thank you sir for the amazing video.

[@alphashortstanish]

great lecture sir🙌🙌

[@avinashkumar3809]

Sir 1 number lecture banaya h aapne , bahut achha laga revise karke . Bahut achha tarike se samjh me aaya ❤

[@EngineersGateWay]

Thank you dear 😊

[@sumit4975]

This chapter covered by you .....
Thank you 👍 sir

[@GILLImonu]

00:05 The video covers Unit Four of Engineering Physics focusing on laser.
07:46 Laser characteristics and energy levels
17:51 Excited state and emission process
22:24 Comparison of spontaneous and stimulated emission
29:05 Photons emitted from atoms have frequency and direction.
32:31 Understanding the small working of the laser
40:24 The process of stimulated emission in laser generation
45:36 Population inversion is crucial
56:07 Understanding the relation between 21 and B 21
1:03:57 Components of laser and their functions
1:13:39 Comparison of laser action between E3 and E2
1:17:16 Ruby laser construction and working explained
1:25:12 Ruby laser is a pulsed laser, not continuous
1:29:19 Laser pumping methods and energy transfer
1:39:17 Laser has various applications in medical, atmospheric studies, and security.

[@truth_speaker00__]

thanks for delivering imp. lectures

[@EngineersGateWay]

Welcome dear 😊

[@kislayuike]

Awesome explanation,it will help me, thanks sir 😊

[@sumit4975]

32:40 metastable state
38:03 what are the necessary condition for laser action?
42:02 what is population inversion
48:54 Einstein coefficients
50:48 Einstein coefficients relationship
1:07:23 what are the main components of laser
1:08:01 active medium
1:10:53 what do you understand by 3 and 4 level lesers? What is advantage of four level laser?
1:14:04 concepts of four laser
1:17:14 describe the principle and working of ruby laser system, compare it with He-Ne laser
1:18:31 ruby laser
1:22:09 working
1:24:46 illustrate the construction and working of helium - neon lasers. Discuss important applications of laser
1:27:13 construction
1:28:47 active medium and resonant cavity
1:30:12 pumping mechanism
1:31:59

[@gaming-with-joker3832]

❤❤❤ awsome sir

[@RamanKumar-jn7cy]

Bohot badiyaa bs aap aise hi content dete rhiye hmee
Thnku so muchhhh!!

[@ajithembrom007]

Thank you ❤❤❤

[@somu-yd4bl]

Sir amazing explanation

[@mayanksingla2304]

Thank you sir

[@rail_empire2212]

osm sir osm appreciate yours efforts sir🔥❤

[@EngineersGateWay]

Thank you so much dear

[@coding.123]

35:48-Shadiyo mai bhut sare items 👽

[@gaushek]

Thanks ❤

[@kanchanshakya159]

Thanku so much sir♥️

[@Reelershere]

Application of optical fibre also important ❤

[@IamanOriginal]

thank u very much

[@PurnimaYadav-fw7di]

THANK YOU

[@gupta41271]

good sir

[@anushkapandey7]

Amazing...my 1hr.30 minutes that i spended worth it ! Thankyou sir...

[@EngineersGateWay]

Thank you dear

[@nishantpandey6421]

bhai spended nhi spent hota h lekin koi nhi life me seekhna jyada important h 😇😇

[@EngineersGateWay]

Ok thanks you dear

[@khanhifza8447]

I don't have enough words to thank u

[@EngineersGateWay]

👍

[@1OnTrendingg]

me 2 hour before exam💀

[@EngineersGateWay]

Good best of luck dear for exam

[@GeniusWave7]

To.... Ismai se aaya tha exam mai.
Please tell me 😋😋

[@amber4104]

@@GeniusWave7 bhai aayega kio nahi sara topic hai isme

[@suyashmishra4521]

Haa aayega ek question he ne laser se ya Ruby se confirm 7 marks me

[@cookscollection3337]

Me to bro☠️

[@sohamkulkarni9988]

good

[@gk_motivation_fact0157]

❤❤

[@study4u163]

Must video sir

[@EngineersGateWay]

Thank you

[@likithurs4165]

hi sir I am karnataka it was a beautiful

[@uniquegayan7033]

Thanks sir good bless you
Sir you.are god for me love you sir
From Chandigarh University ❤️❤️❤️

[@EngineersGateWay]

Thank you dear Share more and more with your friends and classmates

[@avinashkumar3809]

Sir unit 1 ke 7 marks ke que ka one shot karva dijiye please।

[@singinglover3338]

Tomorrow is my exam

[@Bharatsir-i8i]

Sir your explanation is fantastic, it's so helpful for me because my exam in 2 days but this topic is not completed in my college ❤❤

[@EngineersGateWay]

Best of luck for your exam dear

[@Bhagyashri.k]

I am from SPPU 😊

[@Flagmin]

gurudev kripaya ppt bhi attach kar diya kariye malik

[@EngineersGateWay]

Dear due to some issue in hard disk some pdf notes not available to upload that's why this video pdf not uploaded...,

[@kavyamaurya5339]

Sir please aktu syllabus ke acc. Physics unit2 electromagnetic field ka oneshot bna dijiye please

[@EngineersGateWay]

Ok aaj ya kl m mil jaygi don't worry

[@dewa4402]

48:00 sir electrons n excite honge ...ki atoms hi ho jynge ???

[@EngineersGateWay]

Dear, Excited to electron he honge or upper lever pr shift honge but energy absorbe jo hogi vo atom karege

[@sakshiyadav17-h3t]

Sir where is notes of this lecture

[@EngineersGateWay]

It's topics wise notes available I think please check telegram channel

[@omisha6002]

Paper se pahle tension😢 aur ab sirf video dekh ke jaa rahi hu 😅

[@EngineersGateWay]

Tension nhi lena ab tension paper ko deni hai

[@mysteriousmind_official]

Sir, From where can i get the pdf of this lecture??

[@chiraggoel820]

48:08

[@joydeepds-z4f]

sir kiya makaut ka lia parh sakte hai kiya ????

[@EngineersGateWay]

If laser is in your syllabus then Defanetly

[@joydeepds-z4f]

thank u sir
@@EngineersGateWay

[@HarshSaini-jx4hd]

Sir working of helium neon laser written ma text send kariya na plz🙄

[@alinahashmi1146]

sir is unit ke pyq's short or long bhi uploaded hai kya..??

[@EngineersGateWay]

Yes available in 7 marks video and 2 marks video

[@avinashbhardwaj3800]

sir aap aktu university ma pdhate ho ya kisi college ma??☹

[@Haha-yh4zk]

Polarisation ka bhi bnado sir 🫡

[@kavyamaurya5339]

Various level ke place par principle of laser action hai new syllabus me

[@EngineersGateWay]

But beta Ruby laser and He-Ne laser hai syllabus me to is concerned se various level of laser important ho jata hai kyuki Ruby laser 3 level laser hai or He-Ne laser 4 level laser hai 😊

[@kavyamaurya5339]

Ok thank you sir

[@aakifhasan16]

Thanks a lot sir kal mera paper hai

[@EngineersGateWay]

Best of luck dear paper ka status and paper 9058830440 pr jarur bhejna

[@mhmatrix96k]

10 hours before exam 👀👀☠️🌚

[@EngineersGateWay]

👍

[@mhmatrix96k]

Thanks vedio was helpful ❤️

[@prashant_kumar12364]

Is it enough for engineering examination?

[@EngineersGateWay]

Yes almost

[@sumit.thakur]

1:23:32

[@avinashkumar3809]

Sir itna sufficient hai is unit ke liye ।

[@EngineersGateWay]

Beta this video sufficient for Laser Chapter

[@desecrator718]

2 minutes before exam 😂😂😂

[@Phycholone-18]

Sir can rtu srudent watch this video??🥺

[@EngineersGateWay]

Dear share your syllabus on 9058830440

[@UmeeshMndl]

There is not a one shot video

[@EngineersGateWay]

?

[@Ashishvlogs546]

Sir notes kha milega

[@EngineersGateWay]

Dear, This one shot video notes not available other notes available at telegram channel

[@SHREY_RANA_2005]

KAL MERA EXAM HAI ABB TOH SALA TOP MARUNGA

[@EngineersGateWay]

👍 kysa hua exam?

[@SHREY_RANA_2005]

bhai aapne jo padhaya tha voh sab aaya tha aapki kripa sai bas aaj paas hua hun
one shot laser aur optics ka tha jo usme sai hi sab khuch aaya tha specially pulse dispersion
i am indebtful to you for rest of my btech sir thank you so much for one shots @@EngineersGateWay

[@EngineersGateWay]

@SHREY_RANA_2005 thanks dear

[@India_68]

@@EngineersGateWay 👍👍👍

[@Master.COMEDY.334]

thanks sir