Construction and working of Semiconductor laser

Working of semiconductor laser is explained in this video on the basis of energy band diagram. Explanation is provided to the questions like Simple construction of semiconductor laser, Why semiconductor laser is operated in forward bias mode only? What type of semiconductor materials are used to fabricate semiconductor laser?
Sound credit : Chaitanya

[@igzawitaj]

its always an Indian tutorial on YT that saves my ass day before the test XD

[@EngineeringPhysicsbySanjiv]

All the very best

[@learningempire768]

Sir, As per your request, I have researched the amount of doping done in P type and N type semiconductors. I found that they are indeed heavily doped, as you said. Here are my findings: P type semiconductor: The doping level is 1x10^19 cm^-3 The concentration of dopants is 1x10^19 cm^-3 The acceptor concentration is 1x10^17 cm^-3 The donor concentration is 1x10^17 cm^-3 The impurity concentration is 1x10^16 cm^-3 The carrier concentration is 1x10^16 cm^-3 The diffusion coefficient is 2.5x10^{-14} cm^{2}/s The activation energy is 0.7 eV N type semiconductor: The doping level is 5x10^{20} cm^{-3} The concentration of dopants is 5x10^{20} cm^{-3} The acceptor concentration is 5x10^{17} cm^{-3} The donor concentration is 5x10^{17} cm^{-3} The impurity concentration is 5x10^{16} cm^{-3} The carrier concentration is 5x10^{16} cm^{-3} The diffusion coefficient is

[@nishanthp5885]

w for effort

[@hkstar2871]

short simple efficient ❤💖💖

[@EngineeringPhysicsbySanjiv]

Thank you.. keep watching...

[@aenapatel5152]

Thanks for explaining it in easy way🙃👀

[@EngineeringPhysicsbySanjiv]

Welcome..and best luck..

[@saynomore3704]

This was really helpful !!!

[@EngineeringPhysicsbySanjiv]

Glad to know it helped..

[@NavendraBanjare]

Easy language thank uh sir❤️

[@EngineeringPhysicsbySanjiv]

Welcome.. keep watching and share with friends..

[@lovedubey5943]

Sweet language for explaining laser 📌📌

[@EngineeringPhysicsbySanjiv]

Glad you liked it! Share with your friends also..

[@ankit-qk9tm]

❤ great.....crisp and exact

[@EngineeringPhysicsbySanjiv]

Thank you

[@metallurgyandmaterialscien7348]

what is the difference between nanowire based lasers and semiconductor lasers?

[@arunlilhare634]

Nice explanation sir 👌

[@EngineeringPhysicsbySanjiv]

Thanks.. keep watching and share with your friends..

[@Humanonearth-y8y]

Nice explanation sir

[@EngineeringPhysicsbySanjiv]

Thank you

[@GoutamDAS-ls1wb]

What % is heavy doping--% level or 10 ppm level? How is N and P doping achieved in direct junction materials?

[@jsooraj3995]

It was very helpful sir 🙌

[@EngineeringPhysicsbySanjiv]

Glad to know this👍

[@engineengineer4417]

Nice sir 👍

[@EngineeringPhysicsbySanjiv]

Thanks and welcome.. keep watching

[@anandsp1179]

Wonderful time

[@EngineeringPhysicsbySanjiv]

Thank you

[@prasannasyoutubechannel.7265]

Thank you sir

[@EngineeringPhysicsbySanjiv]

Welcome.. Please share with your friends also..

[@muchubatactics]

Thank You

[@EngineeringPhysicsbySanjiv]

You're welcome

[@learner0010]

Thanks sir !

[@EngineeringPhysicsbySanjiv]

Most welcome

[@dikshithavani6356]

Best

[@EngineeringPhysicsbySanjiv]

Thanks

[@sreedharsaju4044]

sir can you make a video for co2 laser also..

[@EngineeringPhysicsbySanjiv]

will do it surely

[@harshsharmavlogs9264]

Hiii sir ek question tha sir.....?

[@EngineeringPhysicsbySanjiv]

??

[@harshsharmavlogs9264]

@@EngineeringPhysicsbySanjiv sir app itana acha kasa padha lata hooo...???? 😊

[@EngineeringPhysicsbySanjiv]

Ohh... so sweet.. 😍

[@sangmeshmashatte2509]

Tqs sir

[@EngineeringPhysicsbySanjiv]

Most welcome

[@usercoolest8521]

Sir do you know telugu??

[@EngineeringPhysicsbySanjiv]

No no

[@utubesudarshan]

Explains LED actionnot Laser action. Title is misleading

[@EngineeringPhysicsbySanjiv]

Working principle for both is same.. just see complete video.. you will understand difference

[@utubesudarshan]

​@@EngineeringPhysicsbySanjiv I have seen the full video. You have not explained the coherence of light and what makes the light achieve a common phase and intensity multipication and collimation.

[@motiurrahman900]

You should explain in written

[@EngineeringPhysicsbySanjiv]

ok

[@ajaykagale9847]

Notes

[@EngineeringPhysicsbySanjiv]

You can find the session wise notes in description of the videos.. Links for videos are given here - drive.google.com/file/d/1lpLUp98zHCSMMtiEuvQUUl5p7LZskkyj/view?usp=sharing

[@nfohunt]

Booorrringggg

[@dps3]

haa jaake yehi exam me bol

[@nfohunt]

@@dps3 exam bhi booring tha vaai 😂

[@dps3]

@@nfohunt acha nice

[@akshaybondre8316]

😂

[@gshreyayadav4979]

If u want joke nd Enjoyment thn this not ryt place, to make u enjoy. This video is for learning purpouse. If it is boring thn don't watch this 😏