Two-photon gain semiconductor amplifier

Semiconductors are proposed as two-photon gain media. The size of the effect and the conditions necessary to observe two-photon gain are determined by employing a low-temperature approximation that allows a simple combination of two-photon absorption theory and semiconductor laser theory. Two-photon gain amplifiers based on electrically pumped GaAs heterostructures and optically pumped InSb are discussed.<
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