Construction and Working of He-Ne laser

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This video explains Construction and Working of He-Ne laser. After explanation of construction, role of Helium in He-Ne laser is discussed. Answer to the question why the proportion of He:Ne is 10:1 is also discussed. Working is discussed on the basis of energy level diagram and at the end, merits and demerits are discussed in brief.
Sound credit : Chaitanya

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13 сен 2020

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Комментарии : 79

@your_only_kouhai 7 месяцев назад

I passed my semester exams because i watched your videos

@sujalkumarsangem9619 2 года назад

Thank you sir, u gave a very comfortable class sir . I think all the people who see this will understand very quickly including me....

@EngineeringPhysicsbySanjiv 2 года назад

Most welcome.. and best luck..👍

@zk-fc4so 3 года назад

best video for understanding He Ne laser action.. Thank you

@EngineeringPhysicsbySanjiv 3 года назад

Thanks🙏

@ramakrishnasrram6712 Год назад

Simple and perfect explanation sir 👌 Thank you so much!

@EngineeringPhysicsbySanjiv Год назад

Most welcome.. Glad it helped you 🙂

@lavanyam270 7 месяцев назад

Well explained all the topics👏. Thank you sir.

@jackhammer9489 5 месяцев назад

For any reason the sound is not clear of your videos. Sometimes it gets difficult to understand what you are saying. Except that I found your class is really helpful.

@Muskanperveen07 5 месяцев назад

Thank you sir ❤ I am really looking for such type of explanation thanks again😁

@Tarunkumar-ff8sb 3 года назад

Hi sir your videos are really helpful to me in my preparation Thank you sir

@EngineeringPhysicsbySanjiv 3 года назад

Thanks

@jayavishwanathraut3115 2 года назад

Sir you explain in such manner that all concept are easily cleared

@EngineeringPhysicsbySanjiv 2 года назад

Thank you for the complement..

@user-fz6er8mh3c 7 месяцев назад

thanks sir🥰🥰 It's so helpfull in exam time😍🥰😇😇🤗🤗

@Tooba-1218 4 месяца назад

Great video. I have one question though, how come heavy Ne atoms gets excited by light He atom ? And eventhough the energy levels are at same level, does not it means Ne atoms will also require same amount of energy to gets excited because obv He atoms will only dissipate energy equivalent to what they have absorbed as a result of exvitation.

@shounaksarkar1480 2 года назад

I like your lucid way of explanation.

@EngineeringPhysicsbySanjiv 2 года назад

Thanks.. please share with ur friends also

@sujathak8101 11 месяцев назад

Excellent explanation sir

@thorer6778 3 года назад

Very well explained Greetings from germany

@EngineeringPhysicsbySanjiv 3 года назад

Thanks a lot.. keep watching..

@Manishamanu06 Месяц назад

Well explained sir👏👏

@mayankagrawal6109 2 года назад

Very well explained thank you very much sir for this video 😀

@EngineeringPhysicsbySanjiv 2 года назад

Thank you

@Health_asset 2 года назад

OP explaination sir, many many thanks sir 👌👌

@EngineeringPhysicsbySanjiv 2 года назад

Most welcome..

@user-fz6er8mh3c 7 месяцев назад

thanks sir It's so hepfull in exam time🥰🥰😍😍🤗🤗😇😇😇😇😇🙂🙂😊😊😊

@deepakrajpoot2536 Год назад

Great explanation ...thank u very much sir..

@EngineeringPhysicsbySanjiv Год назад

Most welcome and best luck 👍

@jacobvandijk6525 3 года назад

I always think that lasers are useful (too) because of the energy they create. But how much is the net gain?

@EngineeringPhysicsbySanjiv 3 года назад

Energy is not created. It is converted from one form to other. The efficiency of laser is very low..

@jacobvandijk6525 3 года назад

@@EngineeringPhysicsbySanjiv I wasn't aware of that. Thank you for your reply. This link confirms what you say: www.rp-photonics.com/wall_plug_efficiency.html

@drsumankhanal 2 года назад

Great video. I am curious what would happen if partially reflecting mirror is replaced by a plane glass?

@EngineeringPhysicsbySanjiv 2 года назад

Then photons wont be reflected back, all photons will be transmitted and amplification will stop. So laser beam will not be intense..

@adityapulipati1221 10 месяцев назад

Not admitted in somaiya college but getting benefit wow thats amazing

@shashankravibhagwat1 3 года назад

Amazing sir!

@EngineeringPhysicsbySanjiv 3 года назад

Thanks a lot!

@learner0010 2 года назад

Excellent explanation sir!🙂

@EngineeringPhysicsbySanjiv 2 года назад

Keep watching

@ezkodes 3 года назад

Explanation 🔥🔥

@EngineeringPhysicsbySanjiv 3 года назад

Thank you..

@srikanthchebrolu1091 2 года назад

Well demonstrated 😊

@EngineeringPhysicsbySanjiv 2 года назад

Thank you

@jabbariqra6097 Год назад

Why metastable state has more life time than other excited state?

@EngineeringPhysicsbySanjiv Год назад

It is just the lack of efficient processes for depopulating a certain level. For example, spontaneous emission may be prohibited by selection rules, i.e., by certain symmetries of wavefunctions.

@jabbariqra6097 Год назад

@@EngineeringPhysicsbySanjiv thanks sir ,God bless you

@yash-xx2pu 2 года назад

thank you so much sir !!

@EngineeringPhysicsbySanjiv 2 года назад

Most welcome.. share with friends also..

@goldenera2210 2 года назад

Best explanation 😊

@EngineeringPhysicsbySanjiv 2 года назад

Thanks a lot 😊

@blazeindian667 Год назад

Very well explained sir

@EngineeringPhysicsbySanjiv Год назад

Thank you..

@CodewizardSumit 17 дней назад

🔥🔥

@abhionyoutube792 3 года назад

Sir make a video on Ruby laser if possible...

@EngineeringPhysicsbySanjiv 3 года назад

will try to upload

@user-bi7hl4lm4h 3 месяца назад

🤩🤩🤩

@abhionyoutube792 3 года назад

Thank you sir, also make a video on Nicole prism sir

@EngineeringPhysicsbySanjiv 3 года назад

Noted.. will try..

@abhionyoutube792 3 года назад

@@EngineeringPhysicsbySanjiv thank you sir

@rohanchoudhary2115 3 года назад

sir ruby laser per video bna dijie

@EngineeringPhysicsbySanjiv Год назад

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE--ZKhxUHPS7E.html

@jkfantasyworld Год назад

Thanks a lot

@EngineeringPhysicsbySanjiv Год назад

Welcome

@ajmal770 3 года назад

Sir pls do raman spectroscopy classes

@EngineeringPhysicsbySanjiv 3 года назад

will definitely try..

@ajmal770 3 года назад

Ok sir

@satyajeetpatil6899 Год назад

@mdraheemahmed2380 11 месяцев назад

Its 5 level laser system, not 4 level

@saheligarai4063 Год назад

Sir please upload this notes...

@EngineeringPhysicsbySanjiv Год назад

Notes links drive.google.com/file/d/1Ikw8Z0T6GRiRNnNOcjAK5Awprm0m9pXt/view?usp=drivesdk drive.google.com/file/d/1DK4jO1E-8qEojxkqHrDOwsefhAQ9iqkv/view?usp=drivesdk

@dr.mrs.archanasrivastava4062 Год назад

when spontaneous emission takes place between E3 to E2 in Ne atom, then what is the role of emitted photon.

@EngineeringPhysicsbySanjiv Год назад

spontaneous emission results into releasing the energy in the form of a photon, which is emitted in a random direction and does not contribute in light amplification.

@dr.mrs.archanasrivastava4062 Год назад

@@EngineeringPhysicsbySanjiv Thank you Sir. That means photons emitted due to transition between E3 to E2 are incoherent.

@hp10p35 9 месяцев назад

Notes please pdf

@EngineeringPhysicsbySanjiv 9 месяцев назад

Engineering Physics Notes links drive.google.com/file/d/1Ikw8Z0T6GRiRNnNOcjAK5Awprm0m9pXt/view?usp=drivesdk drive.google.com/file/d/1DK4jO1E-8qEojxkqHrDOwsefhAQ9iqkv/view?usp=drivesdk

@EngineeringPhysicsbySanjiv 9 месяцев назад

Engineering Physics Notes links drive.google.com/file/d/1Ikw8Z0T6GRiRNnNOcjAK5Awprm0m9pXt/view?usp=drivesdk drive.google.com/file/d/1DK4jO1E-8qEojxkqHrDOwsefhAQ9iqkv/view?usp=drivesdk