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## Main Question or Discussion Point

The Hpyerphysics site, while discussing coherent light of lasers, says that…

“the emitted photons are "in step" and have a definite phase relation to each other.”

So now I wonder about electrons of an atom absorbing photons. Assuming the correct energy level for a given photon, is the probability of an electron getting excited to a higher energy level dependant on the phase of the photon, and/or the phase of the electron?

What about polarity. Is that a factor?

Is there theoretical evidence of experimental evidence one way or the other?

References would be greatly appreciated, as Google searches for this brings up all kinds of unrelated stuff.

“the emitted photons are "in step" and have a definite phase relation to each other.”

So now I wonder about electrons of an atom absorbing photons. Assuming the correct energy level for a given photon, is the probability of an electron getting excited to a higher energy level dependant on the phase of the photon, and/or the phase of the electron?

What about polarity. Is that a factor?

Is there theoretical evidence of experimental evidence one way or the other?

References would be greatly appreciated, as Google searches for this brings up all kinds of unrelated stuff.