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IEEE Journal of Quantum Electronics

Optical bistability in the presence of spatial dispersion

Dror Sarid, Nasser N. Peyghambarian, Brian P. McGinnis

Published Sep 1, 1985• 0 citations
Publisher

Abstract

We calculate the response of a Fabry-Perot etalon containing a nonlinear excitonic medium in the presence of spatial dispersion. The nonlinearity is taken to be that of the polariton density-dependent collision broadening of the exciton resonance. The effect of spatial dispersion on optical bistability in reflection is investigated theoretically in a CdSe etalon with a high-reflectivity back mirror.

DOI
10.1109/jqe.1985.1072844

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We calculate the response of a Fabry-Perot etalon containing a nonlinear excitonic medium in the presence of spatial dispersion. The nonlinearity is taken to be that of the polariton density-dependent collision broadening of the exciton resonance. The effect of spatial dispersion on optical bistability in reflection is investigated theoretically in a CdSe etalon with a high-reflectivity back mirror.
Optical bistability can be obtained in nonlinear materials either with Fabry-Perot mirrors or without external feedback. When a material is placed between partially reflecting mirrors, a nonlinear Fabry-Perot etalon is formed with the etalon providing an external feedback. Optical bistability and gating occur as a result of a shift in the Fabry-Perot peak when the light intensity is increased (or when a second laser beam is introduced into the cavity). Optical bistability with the external feedback mechanism has been observed in many semiconductors such as bulk GaAs, GaAs-AIGaAs multiple-quantum-well (MQW) structures, InSb, InAs, CdS, CdHgTe, GaSe, and CuCI.