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T. Kamata, T. Fukaya, M. Mizuno, H. Matsuda, and F. Mizukami
[Chem. Phys. Lett., Vol.221, No.3,4, pp.194-198, 1994]
The third-order nonlinear optical properties of evaporated thin films of d8 transition metal complexes with dionedioxime have been estimated by the third harmonic generation. They formed one-dimensional structures and showed large optical nonlinealities. Resonance effects were observed for respective metal complexes. Third-order nonlinear susceptibilities chi(3) were plotted for platinum-dimethylglyoximato along with its absorption spectrum in figure. The maximum chi(3) value of 5.6×10-11 esu was obtained at the near three-photon resonance wavelength. The delocalized electrons in linear metal chains may be essential for exhibiting large non-linear optical effects.
