- #1
TMSxPhyFor
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Hi All
I was surfing Internet trying to understand why most books i read simply considers that the stimulated photon emission has same properties as the stimulating photon, and treats this simply as an "take as it is".
For my surprise, i found this article:
http://www.sjsu.edu/faculty/watkins/stimem.htm
I liked it becuase it explains how Einstein thought about this in his original paper, but It states that actually there is no sufficiently satisfactory proof for that even in quantum mechanics!:
I was surfing Internet trying to understand why most books i read simply considers that the stimulated photon emission has same properties as the stimulating photon, and treats this simply as an "take as it is".
For my surprise, i found this article:
http://www.sjsu.edu/faculty/watkins/stimem.htm
I liked it becuase it explains how Einstein thought about this in his original paper, but It states that actually there is no sufficiently satisfactory proof for that even in quantum mechanics!:
so although we using Lasers every day we don't understand how they really works?is that true?Einstein's proof is essentially thermodynamic and depends upon averages over time whereas the result is microscopic and not dependent upon what happens in other interactions. This amazing and very beautiful result can be justified on the basis of symmetry principles but a fully satisfactory method of proof would have to be quantum mechanical. Apparently such a proof has not yet been found.
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