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Physical review. B, Condensed matter

Analysis of biexcitonic optical bistability in CuCl in the presence of collision broadening

Dror Sarid, Nasser N. Peyghambarian, H. M. Gibbs

Published Jul 15, 1983• 24 citations
Publisher

Abstract

The dielectric function of CuCl in the presence of biexciton formation that involves collision-broadening effects is analyzed in terms of incident photon energy and intensity. We discuss the nonlinear response of the material and its application to bistable devices.
DOI
10.1103/physrevb.28.1184

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The theoretical study of the nonlinear dielectric function of three-level systems has shown a memory effect which depends on the inversion of the exciton and biexciton populations created during the excitation and on the relaxation times of these quasiparticles. This effect is studied at low temperatures (2 K) by measuring the time evolution of the transmission of a beam through a CuCl sample. In addition, it has important consequences on the switching properties of bistable devices using CuCl as the active medium.