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Journal of Modern Optics

Pulse propagation effects in magnetoactive bulk direct-gap semiconductors

S. Jaswani, P. K. Sen, Pratima Sen

Published Oct 1, 1998• 1 citation
Publisher

Abstract

Based upon the time-dependent perturbation treatment of coherent radiation-semiconductor resonant interaction, the effect of an externally applied magnetic field on pulse propagation in bulk III-V semiconductors has been investigated analytically. Numerical estimations are made for a sample of InSb crystal duly irradiated by ultrafast infrared dye laser operating in the 3.9–9.4 μm wavelength range. The transmitted intensity profiles manifest the occurrence of pulse chirping and spectral broadening of the input pulse while propagating through the semiconducting crystal under the nonlinear dispersion regime. Although the mechanisms are different, similar characteristics were observed experimentally in atomic rubidium vapour in the presence of a strong magnetic field.

DOI
10.1080/09500349808231744

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