I was reading about stimulated absorption and emission phenomena, and had the following question - Will an atom still undergo stimulated absorption or radiation if the energy of the incoming photon is very infinitesimally different from the energy required for the atom to make the said transitions? I understand that for an ensemble of atoms (such as in lasers or semiconductors) the energy levels are effectively broadened into bands which might make the atoms sensitive to a range of photon energies, but what about the case for a single isolated atom? I would also like to know your thoughts about the feasibility of investigating this question experimentally. Thank you!
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