How Lasers Work - A Complete Guide

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Everyone has seen them, lasers, and have probably teased many cats with them. Just how do those little devices manage to put out this nice beam of light? Lasers are ubiquitous not only in scientific research but also industry - knowing why this is and how they work is the motivation behind discussing it.
This video is a complete guide to how a laser works.
#laser
#education
#physics
Music: www.bensound.com/royalty-free-...

[@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Shows how outdated the system for learning is

[@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.

[@1boobtube]

@@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.

[@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

[@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.”. 😂

[@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

[@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!

[@andrewhadd6616]

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

[@IgneusBeats]

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

[@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. :-)

[@marshel9884]

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

[@enlnh]

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

[@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!

[@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 :)

[@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.

[@harshojha6231]

Very detailed explanation. I love this video😍

[@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)

[@muskankushwah8406]

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

[@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.

[@sanatani_girl01]

I wish there these kinds of lecture videos for my high school lessons. But that wasn't to be. But now that I am in college, I'll make the most of your videos. Thanks a bunch!

[@user-rg7gg2vx7b]

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

[@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.

[@Bert0ld0]

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

[@tburns3611]

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

[@ez5201]

Wow. Just perfect explanation! Thank you so much!

[@ruchisingh2177]

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

[@americanborn6768]

13:54 Best Animation of a Wave Reflection!!

[@santiagoruizlucero3486]

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

[@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

[@cedza7320]

this video seriously saved my life, thank you!

[@a.i.1051]

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

[@soumikchatterjee956]

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

[@excellentmike]

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

[@elenafuengar9862]

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

[@haroonq7876]

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

[@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!

[@larrenwade9535]

Amazing clarity! Thank you!

[@juanmanuelcorredor1596]

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

[@feelingzhakkaas]

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

[@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.

[@CyrusGates]

Great explanation, n corresponds to the antinode/node

[@prakashchandrabhatt4647]

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

[@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

[@serpil997]

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

[@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!

[@TheSam1902]

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

[@gabrieldossantos3195]

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

[@Ayush-ur8nu]

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

[@rogerhargreaves2272]

Beautifully explained. Thank you.

[@aboodmaher7281]

literally explain the whole chapter in 20mins, amazing 🤩

[@Clarkephix]

Very easy to understand and detailed explanation. Thank you

[@aurora2319]

Brilliant explanation. Thank you!

[@apoorvvyas52]

Very clear and complete understanding provided.

[@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.

[@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.

[@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.

[@deutschexpress8624]

Thanks for the informative content

[@jimschiltz5343]

Nice. Very informative. Thank you!

[@baghermohammadzadeh9549]

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

[@bogdanghiorghiu5250]

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

[@drpzor]

Brilliant video, thank you for explanation ^^

[@nujacknetwork9022]

Thanks for the lesson!

[@sureshdharmaratna840]

very well explained. thank you.

[@gicagabi348]

Very good explanation ! Thank you !

[@mridulboro7284]

Very insightful and helpful thank you so much😍

[@smhemant9111]

Amazing video , about stimulated emission. Especially

[@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...

[@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.

[@ghoulunathics]

Perfect explanation, thank you.

[@RachaelAnnePerkins]

Very helpful. Thank you!

[@aibasei3254]

Such a great video, thanks.

[@PravinkumarTiwariphysics]

Good one , very well prepared. Can be made part 2 for CW laser and the pulsed laser theory with a different kind of laser. Kindly explain stimulated emission with potential well.

[@harikalatheeswaran9206]

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

[@aloomia826]

JazakAllah Bhai It really helped a lot

[@roncho]

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

[@gvcallen]

Thanks for the video! This was great

[@adityaphatak8590]

Very nice and detailed. Really loved it

[@jigerwala420]

really good and clear explanations. plz upload more videos thanks

[@v.g.vasavidutt1421]

Thank you! it is very helpful

[@seshachary5580]

Thank you. VERY educative

[@marthareddy9554]

Good lecture on laser basics. My thanks

[@yura2424]

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

[@lyall3000]

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

[@acceph389]

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

[@kabandajamilu9036]

The best explanation ever so nice and educative sir

[@SujitSingh-nj6wf]

Nicely explained. Good One.

[@kritijain8317]

Nice video... amazing to clear concepts... thanks..

[@prashantchauhan1573]

super se bhi apar ....thank you creator ..you are doing amazing work . Hats of to you sir ..

[@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

[@akhileshtiwari7099]

Wonderful explained

[@ViktorGajdos]

nice video - direct and = good understanding

[@noorjee235]

Very well explained...

[@alejandropantallano3946]

Very nice video illustration and clear explaination

[@tonysantos6345]

Excellent video. Coherent and accurate.

[@muralikrishna1097]

Good explanation. Thank you.

[@emre6714]

very nice. short and satisfying

[@-thesmartboard8984]

Thanks for your efforts ❤

[@Primaate]

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

[@VIKASKUMAR-ri2lu]

Amazing explanation about LASER, please upload more video thank you so much

[@EpicHero4]

Great vid with awesome visuals. Liked and subbed

[@nbme-answers]

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

[@jacobvandijk6525]

Thanks for the book-title.

[@VISHALHS-qw1hc]

absolutely amazing