A multiplex infrared-visible sum-frequency spectrometer with wavelength tunability of the visible probe

被引：42

作者：

Ishibashi, TA ^{[1
]}

Onishi, H ^{[1
]}

机构：

[1] Kanagawa Acad Sci & Technol, Surface Chem Lab, Kawasaki, Kanagawa 2130012, Japan

来源：

APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 07期

关键词：

D O I：

10.1063/1.1499986

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a multiplex infrared-visible sum-frequency (SF) spectrometer with wavelength tunability of the visible probe. The spectrometer is based on a two-channel optical parametric amplifier producing a broad-bandwidth femtosecond infrared pulse and a narrow-bandwidth picosecond visible pulse (470-800 and 401 nm). A SF spectrum over a 400 cm(-1) spectral region was obtainable by a single measurement. SF spectra of an octadecanethiol monolayer on a gold substrate were measured with visible probes of different wavelengths from 401 to 633 nm. The spectral shape showed remarkable dependence on the visible probe wavelength. The dependence was ascribed to resonance to a surface electronic state of the substrate existing in the visible region. (C) 2002 American Institute of Physics.

引用

页码：1338 / 1340

页数：3

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