Multiplex infrared-visible sum-frequency spectrometer with a phase-conjugated pulse mixing device for narrow-bandwidth visible probe generation

被引：24

作者：

Ishibashi, TA ^{[1
]}

Onishi, H ^{[1
]}

机构：

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

来源：

APPLIED SPECTROSCOPY | 2002年 / 56卷 / 10期

关键词：

infrared-visible sum-frequency generation; multichannel detection; phase-conjugated femtosecond pulse; self-assembled monolayer; alkanethiol;

D O I：

10.1366/000370202760355253

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We have constructed a multiplex infrared-visible sum-frequency (SF) spectrometer. Picosecond narrow-bandwidth visible laser light (full width at half-maximum (FWHM) similar to8 cm(-1), 400 nm) was obtained by sum-frequency mixing of a pair of phase-conjugated broad-bandwidth pulses generated from femtosecond laser light (similar to110 fs, 800 nm). Femtosecond broad-band infrared laser light (FWHM similar to280 cm(-1), 3.4 mum) was obtained as a difference frequency mixing output of the signal and idler lights of an optical parametric amplifier pumped by the femtosecond laser light. Broad-bandwidth sum-frequency signal light (FWHM similar to280 cm(-1)) was generated by focusing the broad-bandwidth femtosecond infrared laser light and the narrow-bandwidth picosecond visible laser light onto a sample surface. The generated light was dispersed by a spectrograph and analyzed with a multichannel detector. An SF spectrum with a high signal-to-noise ratio over a 400 cm(-1) spectral region with an similar to8 cm(-1) resolution was obtained from an octadecanethiol self-assembled monolayer with a 60 s exposure time.

引用

页码：1298 / 1302

页数：5

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