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

[nikeenosh]

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

[darylmccray]

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!

[muratdogan]

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

[IgneusBeats]

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

[XecutionStyle]

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

[foreverjess]

4:30 "Hey there, little guy"

[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!

[atlass]

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)

[prernasudera]

This is my first ever comment on a YouTube 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!

[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. :-)

[marshel]

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

[americanborn]

13:54
Best Animation of a Wave Reflection!!

[bogdanghiorghiu]

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

[enlnh]

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

[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 :)

[andrewhadd]

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

[harshojha]

Very detailed explanation.
I love this video😍

[Bertld]

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

[rgggvxb]

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

[sanskarmankar]

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