REDETERMINATION OF THE NONLINEAR OPTICAL COEFFICIENTS OF Te AND GaAs BY COMPARISON WITH Ag3SbS3

The nonlinear optical coefficients d11(Te) and d14(GaAs) have been determined relative to d+(Ag3SbS3), pyrargyrite, in second harmonic generation (SHG) experiments at 10.6μ. Based on an absolute value for d+(Ag3SbS3) previously determined, we find that d11(Te) = (22±7) × 10−7 esu, and d14(GaAs) = (3.2±1) × 10−7 esu. The value for Te is significantly less than the previously accepted values.