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Two-Photon Emission from Semiconductors

Alex Hayat·Pavel Ginzburg·Meir Orenstein
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Abstract

We report the first experimental observations of two-photon emission from semiconductors, to the best of our knowledge, and develop a corresponding theory for the room-temperature process. Spontaneous two-photon emission is demonstrated in optically-pumped bulk GaAs and in electrically-driven GaInP/AlGaInP quantum wells. Singly-stimulated two-photon emission measurements demonstrate the theoretically predicted two-photon optical gain in semiconductors - a necessary ingredient for any realizations of future two-photon semiconductor lasers. Photon-coincidence experiment validates the simultaneity of the electrically-driven GaInP/AlGaInP two-photon emission, limited only by detector's temporal resolution.

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Alex Hayat, Pavel Ginzburg, Meir Orenstein. 2007-10-25. Two-Photon Emission from Semiconductors. https://arxiv.org/abs/quant-ph/0701114

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