Difference frequency generation laser based spectrometers

被引：48

作者：

Richter, Dirk ^{[1
]}

Fried, Alan ^{[1
]}

Weibring, Petter ^{[1
]}

机构：

[1] Natl Ctr Atmospher Res, Earth Observing Lab, Boulder, CO 80301 USA

来源：

LASER & PHOTONICS REVIEWS | 2009年 / 3卷 / 04期

关键词：

Tunable mid-infrared laser sources; difference frequency generation; trace gas detection; spectroscopic techniques; QUANTUM CASCADE LASER; ABSORPTION-SPECTROSCOPY; HIGH-POWER; ROOM-TEMPERATURE; INFRARED-LASER; NITRIC-OXIDE; CAVITY; MODULATION; CW; DESIGN;

D O I：

10.1002/lpor.200810048

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Tunable mid-infrared lager sources are the key to precision optical trace gas detection. Difference-frequency generation (DFG) based laser sources are among a few practical laser sources that have demonstrated ultra-high detection sensitivities during real-world applications when combined with appropriate signal enhancing and noise reduction spectroscopic techniques. This article will discuss the technical approaches, illustrate application examples of DFG sources, and offer perspectives to competing technologies. A He-Ne alignment lager visualizes a reentrant beam pattern of a 100 m, 182 pass astigmatic Herriott multi-pass absorption cell used in highly sensitive trace gas DFG spectrometers. [GRAPHICS] (C) 2009 by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：343 / 354

页数：12

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