Nonlinear Optical Spectra in Halogen-Bridged Mixed-Valent Platinum Complexes

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概要

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• Nonlinear optical properties in halogen-bridged mixed-valent platinum complexes are studied theoretically for the first time. Two types of nonlinearities are treated here. One is the electric-field modulation of the absorption spectrum, and the other is the third-harmonic generation. The spectral shapes of these nonlinearities are determined by a method in which both effects of the electron-hole correlation and the lattice fluctuations are taken into account. As for the electric-field modulation, the difference spectrum observed in the visible region for [Pt(en)_2][Pt(en)_2 Cl_2](ClO_4)_4 is well reproduced with features such as the rigid shift of the main charge-transfer band and the newly appearing peak due to the parity-even exciton. On the other hand, in the spectrum of the frequency-dependent intensity of the third-harmonic generation, several enhancements are found : the three-photon resonance structure due to the parity-odd exciton and the free elctron-hole continuum, and the two-photon resonance peak due to the parity-even exciton. In particular, the last one seems to correspond to that observed in the experiment.

• 社団法人日本物理学会の論文
• 1993-05-15

著者

• IWANO Kaoru

  Institute for Molecular Science

• Iwano Kaoru

  Institute For Molecular Science The Graduate University For Advanced Studies

• Nasu Keiichiro

  Photon Factory National Laboratory For High Energy Physics The Graduate University For Advanced Stud

• Nasu Keiichiro

  Photon Factory National Laboratory For High Energy Physics Graduate University For Advanced Studies

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