Four-wave mixing theory for two-photon generation of excitons in thin films of cuprous oxide

Beloussov Igor; Ketterson John B.; Sun Yi

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BELOUSSOV, Igor, KETTERSON, John B., SUN, Yi. Four-wave mixing theory for two-photon generation of excitons in thin films of cuprous oxide. In: Proceedings of SPIE - The International Society for Optical Engineering, Ed. 1, 23-26 august 2010, Kazan. Bellingham, Washington: SPIE, 2011, Vol.7993, pp. 1-11. ISBN 9780819485663. ISSN 0277786X. DOI: https://doi.org/10.1117/12.881329

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Proceedings of SPIE - The International Society for Optical Engineering
Vol.7993, 2011

Conferința "Coherent and Nonlinear Optics and Lasers, Applications, and Technologies"
1, Kazan, Rusia, 23-26 august 2010

Four-wave mixing theory for two-photon generation of excitons in thin films of cuprous oxide

DOI:https://doi.org/10.1117/12.881329

Pag. 1-11

Beloussov Igor¹, Ketterson John B.², Sun Yi²

¹ Institute of Applied Physics, Academy of Sciences of Moldova,
² Northwestern University

Disponibil în IBN: 29 noiembrie 2023

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We propose and theoretically investigate a two-photon four wave mixing experiment to probe for BEC of excitons in Cu₂O thin films. A relatively simple set of equations describing the dynamics of the system is obtained for a particular configuration of the exciting beams, and numerical and approximate analytical solutions are found. The resulting phase-conjugated signal vs. the delay time between the pump and probe pulses yields a direct measure of the time evolution of the exciton condensate, and exhibit peaks when the film thickness is a multiple of a half wavelength of light

Cuvinte-cheie
Bose-Einstein condencate, exciton, Four-wawe mixing, thin semiconductor film, Two-photon absorbtion

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