A widely tunable cw laser difference-frequency source for high-resolution infrared spectroscopy

被引：0

作者：

Chen, W ^{[1
]}

Burie, J ^{[1
]}

Boucher, D ^{[1
]}

机构：

[1] Univ Littoral, Physicochim Atmosphere Lab, F-59140 Dunkerque, France

来源：

LASER PHYSICS | 2000年 / 10卷 / 02期

关键词：

D O I：

暂无

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The development of a continuous-wave (cw) laser difference-frequency generation (DFG) spectrometer is reported. A broadly tunable cw laser-based infrared source was generated from 8 to 19 mu m by laser difference frequency mixing in a gallium selenide (GaSe) crystal. The spectral performance of the DFG spectrometer was evaluated by using the Doppler limited resolution spectrum of benzene in the nu(4) band near 662 cm(-1). High spectral purity and wide tunability make this novel frequency conversion-based infrared source not only a powerful tool for spectroscopy, but also a useful alternative to a semiconductor laser-based detection system for highly sensitive and highly selective measurement of multicomponent trace gas at room temperature operation in the middle infrared region.

引用

页码：521 / 525

页数：5

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