Laser Fundamentals III | MIT Understanding Lasers and Fiberoptics

Laser Fundamentals III
Instructor: Shaoul Ezekiel
View the complete course: ocw.mit.edu/RES-6-005S08
License: Creative Commons BY-NC-SA
More information at ocw.mit.edu/terms
More courses at ocw.mit.edu

[@lidarman2]

I have over 30 years building and working with lasers and I still learned a lot from these lectures. This is teaching at it's best.

[@DeezNutz-ce5se]

What do you build?

[@family-accountemail9111]

Where are his googles? It's peculiar whatching this knowing he has passed away. He comes across. As a great teacher and must have helped thousands of students.

[@Flopsaurus]

I have a much greater appreciation for lasers now. Thanks!

[@DeezNutz-ce5se]

RIP professor. I just read about you. Thank you for this and all you have done.

[@ghostman3398]

Amazing how far so called portable lasers have come.I have a 1000 mw /450 nm Laser half as long as my arm .It will combust anything that's non-reflective an some things that are.Amazing piece of technology,I wish I could go into his video an show him ,he could do more with it than I can I bet,scientifically speaking.I just.like to burn things...lol..Although I'm getting into the other applications lately,its fascinating. That's how I found this show ,I knew there had to be more to these devices than carnal fun.

[@rigeleisenheim8860]

i wish he was my instructor

[@MohammadHizzani]

Can you help me? I need I book go into details for laser and control of it, I am a RA in part of my mater's degree, and the topic to assist with is about control of CW CO2 laser. So, I may need some books talk about this topic with good representation.

[@mmbendou23adc]

Thank yoU Professor that was very interesting, only by listening at the this great and simple explanations I got a more better idea about Laser Beams...

[@MisterJie31]

Kamsahamnida... keep sharing MIT :)

[@03233356272]

dear all, how length of cavity change by applying air !

[@ksenia5215]

It's not by applying air, but by changing the temperature (he's blowing cold air). This leads to thermal expansion in the laser tube thus the cavity length changes.

[@Mrhetziff]

It is clear that laser gain is limited by loss in cavity. The picture were Gain > Loss is not realy correct. On threshold gain is "frozen" and is exact equal to loss.

[@ReachCorporate]

I think lasers should be eating away at my eyes right now.

[@11wolflovers]

Comment removed Author withheld

[@Jay_Flippen]

Get lased.

[@heartfulist]

hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

[@heartfulist]

Sorry professor I've nothing against you, you're a great man, God bless.But someone left an awful message on my channel then blocked me, I think he has to pay for his conduct, someone should teach him to behave as humans, as I'm blocked I'm obliged to do it wherever he goes; till he admits he had mistaken in his conduct.sorry again :))