How Lasers Work - A Complete Guide

[@nikeenosh1694]

This is one whole chapter in my academics, done in 20 min

[@brunoomondi5902]

Wait for papers now 😂

[@tormentor2285]

@Ameer Leonel fuck instagram, watch more laser videos

[@DanielSuazo]

@Ameer Leonel no one gives a royal fuck about your shit

[@newheu3336]

To be honest if you turn his explaination into text it will be a whole chapter of book , but Listening is easier

[@firstname3925]

Shows how outdated the system for learning is

[@muratdogan7240]

Bro created literally one of the best Videos to learn about Optoelectronics/Lasers (even on a Uni level) and then just stopped posting. What a God

[@darylmccray215]

This video is a VERY scientifically accurate description of lasers which is given at a year 1 level of detail. I love the dry humor of the English robot! Probably the best educational video I have ever seen!

[@vernevens1598]

I don't watch or sub to channels with electronic vouceo vers. The way I look at it is if you are too lazy to voice over yourself then I'm too lazy to listen or watch.

[@anullhandle]

@@vernevens1598 I'll give you this robot voice is very annoying but English may not be their native language.

[@murphdog9506]

Ironically my physics teacher's name was David Wright. Is that you??

[@Sweetamber222]

He’s a robot?

[@jessicalewisjessielew3399]

@@vernevens1598 When English is not your native language is really hard to explain something as technical as this. I've watched other "perfect English" explanations of the laser but they weren't nowhere near as good as this. Bottom line, the author did a great job and was forced to use the robot voice over while you're just ignorant and now I just feel sorry for taking my time to write you these lines as you don't really deserve any of this.

[@atlass3964]

0:00 History and Overview 1:50 Unique Properties 3:55 How a Laser Works 4:20 Stimulated Absorption 6:52 Spontaneous Emission 8:35 Stimulated Emission 9:52 Metastable States 11:40 Population Inversion 12:45 Light Amplification 14:15 Standing Wave (18:00 Imperfections)

[@Uthael_Kileanea]

I came here to refresh my memory, but I learned a lot from this video! 7:55 - You encouraged me to learn about how magnets work 10:50 - Is that where the heat in lasers come from? 12:16 - No, this seems like much more wasted energy. 16:29 - The whole section answered all my questions about laser cavities. P.S.: For some reason, drawing eyes on circles made the video interesting instead of tedious. Learned something about didactics, too. Well played, sir. Well played.

[@XecutionStyle]

Einstein: "This is how it works. Go build it." *50-100 years later* Engineers: "Tru."

[@dominicraico8599]

welllllll without the internet information transfer was slower haha ya know?

[@XecutionStyle]

@@dominicraico8599 Yeah, and without Einstein's dad there'd be no E=mc^2 till a bit later too.

[@therion5458]

Einstein in 1934: "There is not the slightest indication that atomic energy will ever be obtainable. It would mean that the atom would have to be shattered at will." 4 years later in Germany: Scientists split the atom at will/nuclear fission is discovered. Atomic energy obtainable.

[@therion5458]

Einstein was not an inventor. In no way did he know how LASER technology works, much less tell anyone how to build it. So give credit to the scientists/engineers who actually invented and pioneered this technology.

[@mrcvry]

Indra Therion The history is interesting. Einstein did publish the theorie about “laser” light. The engineers told him that it is completely impossible to build. Over 40 years later a couple of engineers did not know that and after a couple of years managed to build the first laser. They introduced it to the world and sort of said: “We build it, know you have to find a use for it.”. 😂

[@IgneusBeats]

4:30 The awkwardness level when a robot tries to replicate the human personal touch

[@andregalrito]

This is the best explanation I've ever seen on the LASER, by far! The introduction is also one of the best explanations I've seen on atomic energy levels. Thank you!

[@christopher2206]

A.I. is going to open the power of collected minds. Imagine Billions of minds connected via telecommunications to think and learn on subjects of interest and problems of consequence. All capable of transferring instantaneously.

[@foreverjess14]

4:30 "Hey there, little guy"

[@Trident_Euclid]

Jessie Robinson Hello there little boy. I'm the Pyro man.

[@anteconfig5391]

lmao. I was gonna say the same thing.

[@Caponicus]

@@Trident_Euclid Do you like M E M E S ?

[@cryora]

Hey there Little Marco Rubio.

[@bluewhaleproductions57]

Jessie Robinson that’s what she said

[@prernasudera8417]

This is my first ever comment on a KZbin video and I'm glad i saved it until this particuar one. This was indeed a super detailed and understandable explanation on lasers, the simulated sections in the video and other still images made it so much easier to understand the concepts. Thank you!

[@bugymellon]

this is the most tolerable synthetic voice i've ever heard. Thank you for the video, good stuff!

[@americanborn6768]

13:54 Best Animation of a Wave Reflection!!

[@mdellertson]

This is by far the best explanation of the LASER effect I have ever seen. And I really dig the almost "anonymous" like sound of the narrator's voice. :-)

[@imbirdz6547]

I don't remember why or how I went on a super ADHD tangent and disparately needed to know a LASER works but... really glad this exists. I had the basic idea in my head but... I needed the details for me to get to sleep. Thank you.

[@marshel9884]

One of the best lessons I come across . Just wow ! . Congrats for making this topic easy.

[@bikdigdaddy]

1. 20 minutes video 2. Robotic voice I thought of not watching this video but man, the concepts that you taught are phenomenal. I understood 1 whole big topic in just 20 minutes. Thanks a lot.

[@nullbeyondo]

Pure scientific content. I'd rather hear a robotic voice over bad English so I understand why the author didn't want to speak. Thank you and I like your humor too.

[@larrykent196]

Great point, it did not sound bad and did have as sense of humor. Cheers!

[@krisanderson5636]

That was brilliant. A complex subject well explained. As a trained university lecturer I award you a score of 10/10. I like the robot voice, as it is very appropriate for explaining science.

[@MrDeleoAndre]

The best education video i have seen so far. It explains all aspects and dors not make a lot of shortcuts. Would be even better if the quantum effects also was mentioned more in detail :)

[@haroonq7876]

I just like to say is that this Lasers Guide is the best i have ever seen before.

[@endritmyrta7384]

One of the most scientific videos I've ever seen. He describes so good and of course this is an underrated video. Subscribed!

[@emanuelserban5339]

Jesus loves you kzbin.info/www/bejne/h4HcqHZ6YrmGmpI

[@a.i.1051]

Thanks , Sir . You saved us from lots of wasted web surfing. Your video is complete , compact, beautifully represented . Thanks Again

[@excellentmike]

This was the best video explaining how lasers work that I have seen here on KZbin.

[@CreationTribe]

This is -by far- the best text-to-speech engine I have ever heard (well, at least that I could tell was T2S). I usually *hate* listening to T2S videos - but this one is actually palatable.

[@nbme-answers]

coming from How the Laser Happened (Townes). great animations and analogies. thank you.

[@jacobvandijk6525]

Thanks for the book-title.

[@sanskarmankar1516]

Bro your videos are very useful for engineering students I would like you to make more videos like this , I just enjoyed the whole chapter keep it up bro

[@FirstLast-fb7kk]

Fantastic video with a solid in-depth explanation and enough detail to actually learn instead of mindless imagery with voice over! A definite thumbs up.

[@serpil997]

Wow! Strikingly comprehensive. The fact that only the robotic explanation made the video difficult for me is highly optimistic :D

[@prabalpramanik166]

I have one question. Why the stimulated emission in coherent?

[@mcopperwheat]

The initial stimulated emission will not be coherent but the opposing mirrors mean that only emissions perpendicular to the mirrors are amplified.

[@enlnh]

This was perfect! Exactly what I was looking for. Thank you so much!

[@aboodmaher7281]

literally explain the whole chapter in 20mins, amazing 🤩

[@andrewhadd6616]

Thanks for posting this description and including the nuances of gain curve and material types.

[@Clarkephix]

Very easy to understand and detailed explanation. Thank you

[@aurora2319]

Brilliant explanation. Thank you!

[@georgibaldjiev4469]

i can't understand why great videos like this have only ~ 50 000 views and stupid clickbaits get ~1 000 000 views . the information in this video is so well prsented, almost all the science needed (for understanding LASERs) is provided ..... and still people tend to like the stupid shitpost videos more ?! however, thank you so much, Scientized, for making this

[@barbarabuadessabater4606]

Cool demonstration 🚀🚀🚀!

[@meetoptics]

Sure!

[@Bert0ld0]

The best video about lasers you can find on youtube! Thank you

[@BushCampingTools]

Not bad at all! I worked with Lasers for many years. You've done a good job of explaining the physics so that the layman can understand, I'm subbing!

[@gabrieldossantos3195]

Thats the best laser video ever. Days searching for this infos in a didactic way.

[@yura2424]

8:18 So why things are ferromagnetic? Do you have that video you mentioned here?

[@this_is_cricket]

Thanks dude. Great video. Much better than 90% of the animatic based scientific presentations on the Tube.

[@harshojha6231]

Very detailed explanation. I love this video😍

[@elenafuengar9862]

This was reeeeeally really useful! I didn't quite understand lasers before!! thank you so much!

[@ez5201]

Wow. Just perfect explanation! Thank you so much!

[@cedza7320]

this video seriously saved my life, thank you!

[@prakashchandrabhatt4647]

Love it bro. Complete imformation i needed is all here.

[@RSolimov]

very well written, and well paced, and actually attempts to reduce ambiquity with humor. Perfect, besides the robot voice...

[@ashtonbeattie8902]

"That stuff every other video asks you to do" Where is the merch?

[@ashutoshsaxena3690]

Explanation is incomparable. Laser has been explained in such a simple manner... Thanks a lot

[@j.rhyskesselman2999]

In 2018 Springer Press (a leading science press) published posthumously "The Laser Inventor: Memoirs of Theodore H. Maiman." Maiman's memoirs explain how he came to invent the world's first laser in 1960, despite limited support from his employer (Hughes Research Labs) and in competition with all the major university and industry research laboratories around the world. It's a fascinating autobiography and important document in the history of science and technology. The book is available directly from Springer Press or via Amazon (hardbound or E-book)..

[@muskankushwah8406]

Literary so amazing , I hadn't saw a video like this with so much detail. Thankyou so much for this video.

[@feelingzhakkaas]

Fantastic. Very informative ....nowhere such information in such concise manner available.

[@TheSam1902]

Amazing video ! I knew about spontaneous emissions and stimulated absorption but not spontaneous emission, thank you !

[@alisaghi051]

The excellency of this video is that it elaborates the MEANING of 3 importatnt phenomenons (stimulated absorption, spontaneous emission, stimulated emission). For instance, stimulated absorption means: an electron in the ground state, ABSORB the energy of a photon and get STIMULATED by that energy to the next exited energy level!

[@ThomasGrillo]

Really appreciate the video. Loved the British accented TTS. LOL ;) All of this is also found in the book, "Lasers, and Masers". Added to play list. Thanks for sharing.

[@Ayush-ur8nu]

Thank you so much You should make more videos Your work is good than many other youtubers in this topic.

[@juanmanuelcorredor1596]

What an amazing video. I love science and people who make it fascinating to learn! Greetings from Colombia.

[@SantiagoSRL]

Great video, easy to follow and understand, thank you!

[@MLX1401]

Dear Mr. Robot, there is absolutely nothing wrong with your voice. This video is great, too. Cheers!

[@scatteredvideos1]

2:33 To my knowledge, white light is not a super position of all wavelengths of light. A super position is when two or more things exist at the same time without interaction (until measured) but light can very much interact with other wavelengths of light and all wavelengths can be measured at once.

[@dinherath]

Great video. The synthetic voice was great.

[@noblessus]

best explanation I found of a laser

[@jacobvandijk6525]

@ 19:17 This is going on here: en.wikipedia.org/wiki/Spectral_line#Line_broadening_and_shift

[@uzairhussain4856]

Now this one is some real science of laser.

[@acceph389]

Didn't expect this to be very good, was pleasntly surprised. Godd job on this one (:

[@johannadsouza439]

This so precisely summed up the whole topic, thankyou!

[@soumikchatterjee956]

One of the best explanations for LASER. Keep it up.

[@larrykent196]

Outstanding. Very well presented keeps your interest not too much but just enough. As each idea can be developed farther but the ideas are clearly presented. Cheers!

[@EngKibet]

Perfect introduction to something very complex in an easy and understandable manner. Liked it to the end.

[@meghasaxena2195]

Ohhhhhhhhhhhhhhhhh dammmmmmmmmm. That was smoothly explained!

[@88Conqueror]

100/100 explanation and great animation 👍🏻🙏🏻

[@thedirtykitchenchannel9794]

Many skip population inversion/metastable state. Nice video.

[@roncho]

fantastic video you should do more of theses in more technology topics...

[@kabandajamilu9036]

The best explanation ever so nice and educative sir

[@aloomia826]

JazakAllah Bhai It really helped a lot

[@akhileshtiwari7099]

Wonderful explained

[@gujimugger]

Very very very informative. Thank you for creating this video, it helps me a lot with my project!

[@gicagabi348]

Very good explanation ! Thank you !

[@ruchisingh2177]

Hell of an amazing work by you it's lovely video and concepts are crystal clear 🤞🤞

[@rajaryanigdncxhadk4090]

Awesome video :D I have no words to praise how well you've explained. Simply explained, with very simple examples to which anybody can relate. We need to support such high-quality content. thank you so much for this awesome educational content.

[@deutschexpress8624]

Thanks for the informative content

[@apoorvvyas52]

Very clear and complete understanding provided.

[@MTRX2011]

took me a while to realize the narrator was a computer. nobody can say metastable state with such equal perfection each and every time. 8P

[@Primaate]

Actually a really cool vid that I found extremely simple to follow 👍

[@noorjee235]

Very well explained...

[@alasantos2693]

Nice video, thank you! I would just recommemd you to record the text rather than sintetizing it. It is sometimes difficult to understand. You can count with my voice if you look for a volunteer. Great job!

[@lyall3000]

Fantastic video! Hope you get around to producing more one day.

[@YoucaNShine]

it's amazing. We viewers are so happy and excited while watching the video. The content of the video is like a photon and it makes me to rejoice. thanks you team for this wonderful content. love from India - Tamilnadu.

[@baghermohammadzadeh9549]

It's so accurate and really detailed video. it's so helpful.

[@gruminatorII]

in order to direct the beam in a specific direction, what takes care of the fact that the beam is in a specific direction, and very narrow? Only thin and very long cavity? or is there something else ?

[@scifactorial5802]

Great video, really enjoyed it! Can you make another part on the more practical side of things - how exactly do you get all of those atoms excited in a short amount of time. Especially curious about how you get a continuous laser beam going. With this explanation, I think I can understand how to build a pulse laser but still don't understand continuous energy pumping in the system. Also maybe a bit more on the actual design and components. Maybe even some more info on other types of lasers like chemical, solid-state, gas...

[@emre6714]

very nice. short and satisfying

[@_paliwalgaurav]

This video is surely more informative... worth it

[@LFSPharaoh]

7:46 ok now you got my attention, lets get to the heart of it "but any tiny little force in either direction will cause it to start rolling" >yes yes we're getting there. So where does this force come from? Why/how does it pick a direction?? "this is a quantum mechanical effect" >Great, here we go again.... "Space, or vacuum, is not as empty as we think" >Uh, wuh wait what? "Things are popping into and out of existence constantly" >Holy shit now I'm scared wtf

[@memoboy4141]

This is fucking great, it covers all the subject of lasers in a great way.

[@nishapandey8478]

Where wer u sir.... Such an amazing explanation of science behind LASER....thanku so much

[@hecgalher]

Very good video! Didn't quite get how lasers worked till now

[@tonysantos6345]

Excellent video. Coherent and accurate.

[@fereydoonshekofte199]

God bless you man I learnd a lot

[@pressaltf4forfreevbucks179]

Well you sure didn't learn vocabulary .did you

[@sy41r69]

this video really make me love science

[@harikalatheeswaran9206]

Thanks a lot for such a great and Crysta clear explanation. Loved the video.