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T. Kamata, T. Fukaya, T. Kodzasa, H. Matsuda, and F. Mizukami
[Synth. Met., Vol.71, p.1725, 1995]
Third-order nonlinear optical properties of d8 transition metal complexes with dimethylglyoxime, which have one-dimensional structure, have been investigated by third harmonic generation. They showed large absorption band due to the d-p transition in the visible region. Third-order nonlinear optical property was enhanced by a three photon resonance effect at the band. Wavelength tunability of the d-p transition band was also demonstrated by alloying the linear metal chains.
Fig. 1. Absorption spectra and chi(3) dispersion for thin films of Ni(dmg)2(solid line; triangle), Pd(dmg)2(broken line; circle) and Pt(dmg)2(dotted line; square)