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Excitation Wavelength Dependent Three-Wave Mixing at a CO-Covered Platinum Electrode

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Title: Excitation Wavelength Dependent Three-Wave Mixing at a CO-Covered Platinum Electrode
Authors: Yagi, Ichizo Browse this author
Nakabayashi, Seiichiro Browse this author
Uosaki, Kohei Browse this author →KAKEN DB
Issue Date: 18-Sep-1997
Publisher: American Chemical Society
Journal Title: Journal of Physical Chemistry B
Volume: 101
Issue: 38
Start Page: 7414
End Page: 7421
Publisher DOI: 10.1021/jp964010r
Abstract: The interfacial electronic structure of a CO-covered polycrystalline platinum electrode has been studied by using the optical second harmonic generation (SHG) and sum frequency generation (SFG) techniques with various excitation wavelengths. Although the nonlinear optical (NLO) signal was enhanced by the absorption of CO at all excitation wavelengths employed in this study, the potential dependent behaviors of the NLO signal were different between the near-infrared excitation and the visible excitation. The difference was attributed to the different mechanisms for the enhancement of the NLO signal. While the electron transition from the Fermi level of Pt to the unoccupied 2πa* orbital of adsorbed CO was considered to be coupled with the NLO photon in the case of visible excitation, the dc field induced SHG regime was applied to the result obtained by the near-infrared excitation.
Type: article
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 魚崎 浩平

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