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Defect and diffusion forum/Diffusion and defect data, solid state data. Part A, Defect and diffusion forum

Role of Diffusion in the Shaping of the High-Absorption State in a Resonatorless Exciton Bistable System

Iurii Gudyma, Ivanna V. Kruglenko

Published Oct 1, 2005• 0 citations
Publisher
DOI
10.4028/3-908451-16-7.9

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Abstract A new type of optical bistability is presented. Instead of a resonator the intrinsic feedback between the optical excitation of carriers and their recombination is used. Optical bistability appears, if the absorption coefficient increases with growing carrier density. Both propagation effects and carrier diffusion are considered. Analytical model calculations are carried out for an abrupt behaviour of the absorption coefficient. The results explain the hysteresis in the transmittivity of CdS, recently observed.