Abstract

In the cubic many-valley semiconductors strong nonlinearity of optical characteristics, in the IR-region is connected with the redistribution of the carriers between the equivalent valleys. The main reason for this redistribution is the different carrier heating in the various valleys.¹ The dielectric function becomes anisotropic and dependent on the intensity of the light. For nonsymmetric direction of the polarization of the IR-light the self-induced birefringence of light waves takes place.

© 1994 IEEE