Two-Photon Emission from Semiconductors

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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.
Coincidence experiment results added, QW stimulated TPE added, stimulation power TPE dependence shown, measured spectra recalibrated, quantitative theory presented

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Quantum Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/140759

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/quant-ph/0701114
 http://arxiv.org/abs/quant-ph/0701114

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arXiv