Remote mid-infrared sensing using Chirped Laser Dispersion Spectroscopy

被引：3

作者：

Nikodem, Michal ^{[1
]}

Smith, Clinton ^{[1
]}

Weidmann, Damien ^{[1
]}

Wysocki, Gerard ^{[1
]}

机构：

[1] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA

来源：

ADVANCED ENVIRONMENTAL, CHEMICAL, AND BIOLOGICAL SENSING TECHNOLOGIES VIII | 2011年 / 8024卷

关键词：

spectroscopy; dispersion spectroscopy; CLaDS; mid-infrared spectroscopy; optical heterodyning; gas sensing; nitric oxide; quantum cascade laser; QUANTUM-CASCADE LASER;

D O I：

10.1117/12.883598

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A new spectroscopic technique for remote molecular detection is presented. Chirped Laser Dispersion Spectroscopy (CLaDS) uses a two-color dynamic interferometric heterodyne detection to measure optical dispersion caused by molecular transitions. The dispersion sensing is based on measurement of instantaneous frequency of an optical heterodyne beatnote which provides high immunity to optical power fluctuations. Thus CLaDS is well suited to long distance remote sensing and open-path monitoring. In this work we present CLaDS experimental setup for remote sensing of nitric oxide using 5.2 mu m quantum cascade laser. System performance as well as advantages and limitations are discussed.

引用

页数：7

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