I am a first year student and watching this sir I remind me my best physics teacher on RUclips Mohit Goenka sir of eduniti Great video sir Thank you so much!!
0:00--->LASER Characteristics. 17:25--->Einstein's co-efficient. 23:03--->Population Inversion. 25:03--->Schemes for Population Inversion. 34:29--->Properties of LASER. 37:48---> He-Ne LASER. THANK YOU 💖
wow, keep this performance in the future. I am glad that my videos are helpful to you. Please share the video and channel with your friends to support me. 🙂
Not much interest in comment section generally , but I'm taking this tym to write something here ! Being just a NEET aspirant, the channel came through a atomic structure quantum topic, although sir's way is very high , obv as it's for engineering... But by that video i came to this vdo , and loved so much the way of teaching , literally ❤ ....
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The word "laser" is an acronym for "light amplification by stimulated emission of radiation". The first laser was built in 1960 by Theodore H. Maiman at Hughes Research Laboratories, based on theoretical work by Charles Hard Townes and Arthur Leonard Schawlow.
thanku sir for this lecture...@18:26 let n1 be the number of particle in ground state and n2 number of paricle in exited state ...mujhe lgta ye statement adhuri hai .. mere hisab see aaisa likha jana chahiye tha ki n1 number of particle ne absorption kraa.. and n2 number of particle ne ..spontaneous emission kra..jiske response me aur dusre n2 number of particle ne bhi stimulated emission kra.. equation dekhkr aaisa hi pratit hota hai. sir kya Maine shi direction me socha hai??
Aap stimulated emissions ke liye jo radiation interaction responsible hota hai uska calculation bhi include kara cahte hai, possibly spontaneous process ke through. But this is not always possible, laser cavity ka rdiation bhi stimulation kara sakta hai so do baar n2 sochna ek specific situation ho sakta hai. But in actual paper einstein himself is bare me kuch nahi kahte. Ye maan ker ki radiation preexist hai stimulated emission define karte hai. Further quantum theory of radiation interaction with matter, transition matrix is process ko bahut acche se define karta hai by considering all such possibilities.
@@RGSClassesEssential Unit-: Band theory of solids Basic idea of free electron theory of metals, expression of conductivity of a metal. Formation of energy bands in Solids, Fermi energy and Fermi level. Classification of solids on the basis of energy band diagram: Conductors, Semiconductors and Insulators, concept of Fermi energy.
Engineering chapters of what subject? For physics I am doing it. For old sessions one shot or revision videos are on channel. Please specify the topics, use mail physwow@gmail.com for detail plan. Thanks for your interest 🙂
i have an app and different courses but not for Btech,full courses are for BSc students. You may download the app RGS Classes from play store to see some detail, where i am providing the PDF notes for btech physics
@@RGSClassesEssential i am nit Hamirpur student computer science. Currently i am giving exam of first semester. So sorry sir i don't know that what subject will tought. First i confirms my teachers after exam then i will tell.❤️ Your way of teching is extraordinary sir. Thank you very much🙏🙏🙏🙏🙏🙏
❤❤Sir you are the best❤❤Teacher❤❤in the world❤❤Sir❤❤
🙂thanks
I am a first year student and watching this sir I remind me my best physics teacher on RUclips Mohit Goenka sir of eduniti Great video sir Thank you so much!!
I AM ALSO BIG FAN OF MOHIT JI HE IS FANTASTIC.
@@RGSClassesEssential yes sir we like both of you
0:00--->LASER Characteristics.
17:25--->Einstein's co-efficient.
23:03--->Population Inversion.
25:03--->Schemes for Population Inversion.
34:29--->Properties of LASER.
37:48---> He-Ne LASER.
THANK YOU 💖
Thanks
@@RGSClassesEssential you're welcome 🤗
From attending Sir's lecture in class to seeing this video on RUclips. ❤❤❤
★ 0:00>LASER Characteristics.
★ 17:25->Einstein's co-efficient.
★ 23:03 --->Population Inversion.
★25:03->Schemes for Population Inversion.
★ 34:29 -->Properties of LASER.
★ 37:48→ He-Ne LASER.📝
Thanks Saurabh
Spr teaching sir 🙏♥️
@@praveenmagi2851 welcome praveen
Sir notes bhejona
Which Topics Are Not Included Koi Batayega??
Best video for Laser. Thank You sir Because of this I was able to get good grades on my Laser Test. Thank You once again sir.
Wow congrats🎉 this is very satisfactory comment.
Thank you so much Sir Huge Respect for you
Welcome Devanshu glad to know that it is helpful to you.
Thankyou sir for this like explanation 😊😊
@@manshukumar3113 ❤🙂
This is not revision video . Mujhe class mae ye unit samjh ni arhi thi yaha 40 min all doubt clear
Wow I am glad that it is helpful to you. Feel free to suggest me what topics or content i should consider for future videos.
very good explanation sir
absolutely loved it
Thanks ajay
Very amazing way of teaching ❤❤❤❤
Thanks a lot 😊
I given mid term in lpu with help of ur one shot video 80% i marked question.nice lecture
wow, keep this performance in the future. I am glad that my videos are helpful to you. Please share the video and channel with your friends to support me. 🙂
@@RGSClassesEssential 👍
Lol lpu 1st year me marks nhi katega 😂
@@BLADE_PLASMA 😂😂😂
@@BLADE_PLASMA unsaid rules🙂🙂
Not much interest in comment section generally , but I'm taking this tym to write something here !
Being just a NEET aspirant, the channel came through a atomic structure quantum topic, although sir's way is very high , obv as it's for engineering... But by that video i came to this vdo , and loved so much the way of teaching , literally ❤ ....
best of luck for your future be a good doctor, world need this.
Waah sir ki hindi ❤
@@Rajat--an1 ❤❤
Thanks for covering all the topics
most welcome
This is very useful 👍👍
Glad it was helpful!
Excellent sirji 🙏. Please make some more regarding Enginnering physics
on this channel I have already uploaded many videos on engr. physics
Thank you so much sir, for this video.What an explanation!
According to me it's great.
Thanks
Which book you would recommend for understanding mathematical part of population inversion?
More detail is given in quantum electronics book say ghataks book a photonics books also included the detail discussion.
It's my exam passing topic
Thank you sir for this video ☺️
Most welcome
@@RGSClassesEssential sir can you suggest some topic for achive passing marks only , I need only 20 Marks for passing my 1st semester exam
Quantum, emt and superconductor only 2.5 units gave you passing marks ( even more than that)
@@RGSClassesEssential thank you sir 💗💞
thanks sir for this quick revision .
Welcome
Thanks a lot sir ! I’m in first year btech and it’s really helpful to me 🫶🏻👍🏻
wow ! keep learning. your feedback will improve the content so feel fee to comment me. good luck.
this video helps a lot in my end-sem exam ........Thanks a lot sir 💞💖💖💖
My pleasure, dear😌
Class m smjh nhi paye the sir but aap itne ache se clarify kiye sab aa gya smjh m thank you so much sir ☺️
Welcome 😊
Sir IIT me hu..kal exm h😃😃aap gzb pura laser 40 min me padha dia❤️😍
Glad to know that it is helpful. Good luck
🙏 iitian bhaiya ko
Thanks sir 👍
Welcome
Very very thankyou sir ❤
Most welcome
BEST VIDEO
❤️
Loved this session sir ❤️ thnx alot!
Always welcome
A huge thank you sir! ✨
🙂
Sir rona aa gaya 😭 literally apne mera kal ka exam bacha liye thank you 🙏
@@svgstark3742 best of luck
@@RGSClassesEssential thank you sir , love you from NIT surat ❤️🙏
Love you
sir where i can foundv the notes of this lecture
Great video... Thanks sir
Thanks
Thank You So Much Sir...❤❤❤ Full Respect 🫡🫡🫡
most welcome dear
Great explanation sir🔥🔥🔥🔥
Thank s
Thank u sir 4 saving my exam... ❤
Most welcome dear,happy to know that video was helpful to you.
Awesome 👍
thanks
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The word "laser" is an acronym for "light amplification by stimulated emission of radiation". The first laser was built in 1960 by Theodore H. Maiman at Hughes Research Laboratories, based on theoretical work by Charles Hard Townes and Arthur Leonard Schawlow.
True
Thank you so much sir for the informative vedio it helped me in my exams a lot
Glad to know that best of luck
thanku sir for this lecture...@18:26 let n1 be the number of particle in ground state and n2 number of paricle in exited state ...mujhe lgta ye statement adhuri hai .. mere hisab see aaisa likha jana chahiye tha ki n1 number of particle ne absorption kraa.. and n2 number of particle ne ..spontaneous emission kra..jiske response me aur dusre n2 number of particle ne bhi stimulated emission kra.. equation dekhkr aaisa hi pratit hota hai. sir kya Maine shi direction me socha hai??
Aap stimulated emissions ke liye jo radiation interaction responsible hota hai uska calculation bhi include kara cahte hai, possibly spontaneous process ke through. But this is not always possible, laser cavity ka rdiation bhi stimulation kara sakta hai so do baar n2 sochna ek specific situation ho sakta hai. But in actual paper einstein himself is bare me kuch nahi kahte. Ye maan ker ki radiation preexist hai stimulated emission define karte hai. Further quantum theory of radiation interaction with matter, transition matrix is process ko bahut acche se define karta hai by considering all such possibilities.
@@RGSClassesEssential ohk sir... thank you for reply🙏
Thank you sir ji , revision videos ko ek playlist bnado please sir
Done please check. Keep updating me what you all required, i will try to include it. Thanks
Thank you so much sir. 🙏🏻🙏🏻
Most welcome
Thank you so much sir the video is very helpful
Glad to know that it's useful.
Very good explanation sir in very short time I understand all topics very easily
Welcome dear
Sir ue mumbai university ke bachho ke liye hai kya please reply sir?!!
Most topics are common so you may see
Sir baaki chapters ke bhi one shot krwaye hai kya aapne ? Agar karaya hai to kya aap link provide kr skte ho please 🙏🏻
Please also make videos on 🥺❤️
*Diffraction*
*Physics of sensors*
*Nanotechnology*
*Electrodynamics*
Will definitely try
@@RGSClassesEssential where is the video sir
Completed this chapter the night before exam...all thanks to sir
thank you sir ji for making such a beautiful lecture...take love ❤
❤
Thanks sir 🙏
Sir ctae udaipur ke syllbus ke according h same
I just downloaded your syllabus and observe that most of the course will be covered in the lectures available on this channel. Best of luck
From Bangladesh, thanks a lot sir ❤❤
Most welcome👍
Exam se ek din pahle padha or exam nipta diya 40 min me 😂😂😂
Wah🙂
Waah bhai, same name 😂
@@ashutoshjha6981 are Bhai 😂😂
@@Ashus-Insights Bhai ek help kar de na, agar baaki chapters ka bhi one shot krwaya hai sir ne to Zara link share kr na yaha copy paste karke
Chandigarh University walo attendance lagao
A lot of thanks sir
Most welcome
Thank you soo muchh sirrr mere college ke teacher ita sahi se smjhadete toh aaj mai top kr rha hota mere college mai😂
🙂🙂
Thanks for such an amazing lecture ❤
Most welcome!
Amazing Teacher ❤
❤
Iss class ki pdf ka link kaha hai?
exam ka agle din kon kon dekh rahe ho like karo
Pichle*
Mai
Yes bro
Love you sir
thanks for watching and appreciating.
thank you soo much sir huge respect for you
Most welcome😊
Is it helpful for chandigarh university semester exams
Provide me your syllabus at physwow@gmail.com
Sir please make revision video on band theory of solids
Ok will try
Send me syllabus
@@RGSClassesEssential Unit-: Band theory of solids
Basic idea of free electron theory of metals, expression of conductivity of a metal.
Formation of energy bands in Solids, Fermi energy and Fermi level.
Classification of solids on the basis of energy band diagram: Conductors, Semiconductors and
Insulators, concept of Fermi energy.
Thanks
Welcome
Sir pls make videos on one shot videos of engineering chapters please sir no one is doing it in youtube (vtu- 2022 scheme too)
Engineering chapters of what subject? For physics I am doing it. For old sessions one shot or revision videos are on channel. Please specify the topics, use mail physwow@gmail.com for detail plan. Thanks for your interest 🙂
@@RGSClassesEssential ofcourse for physics sir 😙
thanks for ur response sir
🎉🎉🎉🎉🎉🎉 for u sir
Thanks 🙂🙂
Thankyou 👍
You’re welcome 😊
Very precise video.
Helped a lot.
👍👍👍
Glad to know that it is helpful
Sir, notes nahi mil sakta hai?
Awesome teaching sir ❤️
Oh thanks
@@RGSClassesEssential Please also make videos on 🥺❤️
*Diffraction*
*Physics of sensors*
*Nanotechnology*
*Electrodynamics*
Sir Notes bhi share kardiya karo please
Telegram banate hai to hi ho payega
Thank you so much sir ab kal ke exam me ho jaega laser😊
most welcome
Revision ❌
Full lecture ✅
❤
Sir mbm university jodhpur ke liye kya ye shi rhega?
Sir plz make videos from all the topics covering Makaut curriculum, there are very few teachers on RUclips for us college students
u save my day sir.
Ur comment make my day
If want to start learning group theory of discrete mathematics see lectures ruclips.net/video/KOUUCr8da2s/видео.htmlsi=a6HpEjLvmWK767Uw
Thanks sir
Welcome
Sir aapka koi course hain kya physics ke liye first year
i have an app and different courses but not for Btech,full courses are for BSc students. You may download the app RGS Classes from play store to see some detail, where i am providing the PDF notes for btech physics
Thankyou sir for your laser video ❤❤
Welcome
Pdf milagi iski??
Thanks sir tomorrow my physics paper
best of luck
Sir please engg physics ke important questions ka video bana do insem hai end of feb mai please sir 🙏🏻
This lectures is for mumbai university or not❤
its helpful
Yeh rtu syllabus k hisab se h ky sir??
Abhi to maine focus AKTU ko kiya hai,
Toh sir ise rtu student dekhe h toh cover ho jayga ky yeh ch ...sirf yhi revision video ko
@@agratagupta8712 i think i have covered standard syllabus so ho jana chahiye
Please make lecture related to btech second semester
Which subject
@@RGSClassesEssential i am nit Hamirpur student computer science. Currently i am giving exam of first semester. So sorry sir i don't know that what subject will tought. First i confirms my teachers after exam then i will tell.❤️
Your way of teching is extraordinary sir.
Thank you very much🙏🙏🙏🙏🙏🙏
@@explorerashish6279 ok
sir you are loking like Ankit awashthi sir.
🙂 Hope unka jitne knowledgeable ho jaye, he is toooooo..good in his field.
Sir mu wale bhi yeh refer kar sakte haina??
sir plz provide notes
SIR PLEASE PROVIDE THESE NOTES
It is an old video and i don't have these notes now sorry
Sir can you plzz provide us the notes of this topic...?
Sure I will try, let me search
@@RGSClassesEssential yes sir please...!
Which Topics Are Not Included Koi Batayega??
Iski ek hi video h ky ??
Ek video me revision kiya hai
Bhai samj nahi aya 22:04 sai
20:14
Sir aap shm par bhi videos lao pls
Which university??
Wah
🙂kya comment hai, wah
@@RGSClassesEssential nahi sir ji aapka padhya hua smaj aaya toh wah
Goated lecture
Thankx
Ram Ram ji 🙏❤️
Jai Sia Ram
Mai to exam se 25 minit phle dekha rha hu 😅😂
kitne tejashvi log hai hamare yaha
@@RGSClassesEssential😂