Exciton absorption and gain bands in semiconductors coherently polarized by laser radiation

S. A. Moskalenko; V. R. Misko

doi:10.1117/12.342351

15 March 1999 Exciton absorption and gain bands in semiconductors coherently polarized by laser radiation

S. A. Moskalenko, V. R. Misko

Proceedings Volume 3734, ICONO '98: Fundamental Aspects of Laser-Matter Interaction and New Nonlinear Optical Materials and Physics of Low-Dimensional Structures; (1999) https://doi.org/10.1117/12.342351
Event: ICONO '98: Laser Spectroscopy and Optical Diagnostics: Novel Trends and Applications in Laser Chemistry, Biophysics, and Biomedicine, 1998, Moscow, Russian Federation

Abstract

The exciton absorption and emission bands in the presence of Bose-Einstein condensation (BEC) of excitons, induced by the coherent laser radiation is considered. The laser radiation creates the coherent macroscopic polarization of the crystal, which is described as a virtual BEC of excitons. The energy spectrum of the elementary excitations as well as the probabilities of the quantum transitions depend essentially on the frequency detuning (Delta) ^-. The nonequilibrium occupation numbers of out-of-condensate excitons n^ex_q arising in the presence of virtual BEC influence on the forms of absorption and emission bands.

Citation Download Citation

S. A. Moskalenko and V. R. Misko "Exciton absorption and gain bands in semiconductors coherently polarized by laser radiation", Proc. SPIE 3734, ICONO '98: Fundamental Aspects of Laser-Matter Interaction and New Nonlinear Optical Materials and Physics of Low-Dimensional Structures, (15 March 1999); https://doi.org/10.1117/12.342351

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