Wavelength variation of the second-order nonlinear coefficients of KNbO3, KTiOPO4, KTiOAsO4, LiNbO3, LiIO3, beta-BaB2O4, KH2PO4, and LiB3O5 crystals:a test of Miller wavelength scaling

The measure second-order nonlinear coefficients using optical parametric am plification and second-harmonic generation over a range of wavelengths for the crystals KNbO3, KTiOPO4, KTiOAsO4, LiNbO3, LiIO3, beta -BaB2O4, KH2PO4, and LiB3O5. Combining our new measurements with previously reported values , we compare the wavelength variation of individual d(ijk)'s with Miller sc aling, and we conclude that Miller scaling is a useful approximation for th ese crystals. (C) 2001 Optical Society of America.