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Proceedings Paper

Remote mid-infrared sensing using chirped laser dispersion spectroscopy
Author(s): Michal Nikodem; Clinton Smith; Damien Weidmann; Gerard Wysocki
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Paper Abstract

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 μm quantum cascade laser. System performance as well as advantages and limitations are discussed.

Paper Details

Date Published: 26 May 2011
PDF: 7 pages
Proc. SPIE 8024, Advanced Environmental, Chemical, and Biological Sensing Technologies VIII, 80240F (26 May 2011); doi: 10.1117/12.883598
Show Author Affiliations
Michal Nikodem, Princeton Univ. (United States)
Clinton Smith, Princeton Univ. (United States)
Damien Weidmann, Rutherford Appleton Lab. (United Kingdom)
Gerard Wysocki, Princeton Univ. (United States)

Published in SPIE Proceedings Vol. 8024:
Advanced Environmental, Chemical, and Biological Sensing Technologies VIII
Tuan Vo-Dinh; Robert A. Lieberman; Günter Gauglitz, Editor(s)

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