2007/01/16 by Alex Hayat, Hayat, Alex, Pavel Ginzburg +3
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #FOS: Physical sciences #Laser-Matter Interactions and Applications #Quantum Physics (quant-ph) #Semiconductor Lasers and Optical Devices #quant-ph
paper · pdf · doi:10.48550/arxiv.quant-ph/0701114
Coincidence experiment results added, QW stimulated TPE added, stimulation power TPE dependence shown, measured spectra recalibrated, quantitative theory presented
openalex publication_date 2007/01/16 · arxiv created 2007/10/25 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.