Laser fundamentals III: Reflection back into laser | MIT Video Demonstrations in Lasers and Optics

[@UntrainableWizard]

Question- A powerful laser, through a one way mirrored surface, mirrored at the "end" of it's path directly back towards the laser, would the effect still exist? It's something that I would imagine is incredibly difficult to test, since there's no placement within this to put any input, but curiosity gets the better of me. An example setup of this; Where; || is a one way mirror | is a standard mirror = is the light [ ] is the laser / diode / whatever [ ]=||==================|

[@andrewstone8999]

No. "One way mirrors" are actually used for this in optical experiments, though usually they absorb rather than reflect the light coming towards the source.

[@UntrainableWizard]

@@andrewstone8999 Thank you for the response, I appreciate it. :D

[@cyberlightbeing]

So what is the correct answer to the puzzle at the end? Why is there a dramatic effect on the laser frequency and its intensity when the laser is reflected back?

[@SolarMillUSA]

@6:56 Jump up, jump up and get down!

[@owlredshift]

JUMP JUMP JUMP JUMP

[@260830107]

is back reflection only a problem for gas lasers with a cavity?

[@alexred9963]

no. diode laser also give different light

[@soundspark]

I've heard you can burn out a laser diode with back reflection.

[@9ofmany]

Cap 🧢

[@joeyfeliciano9199]

Crap, big crap!!!

[@owlredshift]

JOEY. What is going on with you man, go change your shorts. Jesus christ