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VOLUME 33 (1981) | ISSUE 12 | PAGE 625
Light-induced gyrotropy and anisotropy in a cubic crystal
We have detected light-induced gyrotropy and anisotropy affects in a cubic InAs crystal. These effects are due to cubic nonlinearity. The components of the nonlinear susceptibility tensor дл^г= 4.6X 1СГ8 cgs unit and x^yy = 2.9 X 10~8 cgs units at the frequency of the probing radiation Ω — 3.92 χ 10м sec-1 (pump radiation frequency is ω = 1.96x10м sec-1 and Eg =0.4 eV) have been calculated in the approximation of quasispherical crystal symmetry.