pumping of laser

[@nareshbarik5384]

Thank you

[@mzzaka_009]

Great Sir, Please make video on each pumping method separately.

[@tanmaymandal7327]

i have a question when A atom is excited it will go to excited state but how it will come in the ground state of B???

[@zeealwaysshan]

Decay of energy or let's say spontaneous emisson
Or stimulated emission in case of external radiation is applied

[@pinkumia1831]

Your ability to teach is great sir

[@gouravjangde7054]

it is really helpful ,thank uuu so much Sir

[@StrollerEngineer]

do you know phunsuk wangdu

[@manoharlekkala2753]

during inelastic collision energy is not conserved sir but both atoms share energy please could you explain?

[@srinadhbijjala8772]

In Random Laser's what is pumping position and Threshold limit?

[@rajpootrubina0514]

Sir after collision with atom why electron doesn't lose kinetic energy

[@mamathamanugunta2118]

Sir please upload some more lecture on the other concepts in EP. Please sir.....ur videos r very very helpful.thank u so much sir.

[@MairaFiaz-ag-]

Sir what is optical pumping with flash tube

[@santhoshsunkara7212]

Sir,your lectures are very helpful.Can you please upload some more videos on coherence

[@shriramlondhe4486]

Good teaching

[@navvennaveen1354]

ur lectures are super sir

[@tseringangmo4652]

Super👌👌👌👌👌sir thankss🙏🙏🙏😆

[@omraikar8517]

Crystal clear sir thanks!!

[@ritikrajput6070]

nice lecture sir and please upload video on He-Ne gas laser please sir

[@soorajvn2868]

is active medium similar to lasing medium??

[@mohaktrivedi9591]

Yes

[@saponjeet]

good to understand sir... thank u..

[@nithyanandhann2073]

Sir please explain what is ground state and exited state

[@mrmichrom8553]

Think of cats or goats climbing a tree. They might have no energy and stay on the ground (lowest energy state). Or they might be excited and jump up to the top of the tree. If they get a big kick they might even fly out of the top of the tree (ionization). Every time they fall from a branch to the next, or to the ground, you get a photon emitted whose energy is the same as the difference in energy levels of the branches.

[@harithabera331]

Sir please make a video on types of hologram

[@PriyaKumari-up4dx]

Thanx sir

[@11.sumeetdube65]

Thanks

[@narasareddykaliki7987]

Super explain

[@kuldeepchoudhary5070]

Thank you Sir ji

[@anr864]

keep going

[@venkatesh1751]

Thanks a lot...

[@StrollerEngineer]

pata nhi ka padha rahe h

[@abinjose2408]

Perfect

[@StrollerEngineer]

khatam kare pada hai bas

[@mstrlone367]

vvv