Recently, I read an article on time reversed laser. I don't know why they call it a time reversed. I have a doubt that why they use two laser in the device. And what is an anti-laser? The device absorbs the particular frequency of light which means some energy is lost. What happens to the lost energy?
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4Compare and contrast: Anti-laser: How sure we are that energy is transported?, Recently publicized experiment on destructive interference between two laser beams and Is the time reversed laser really a laser? (and the OP's answer to the last of those). On the whole I suspect we can close this as a duplicate. – dmckee --- ex-moderator kitten Apr 09 '13 at 17:12
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1@dmckee: I think we can't close the question as a duplicate of the third one ;-) – Waffle's Crazy Peanut Apr 09 '13 at 17:27