Photo-Acoustic Spectroscopy of Chemical Warfare Agents using Optical Fibre Delivery of a Distributed Feedback Laser

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Authors
  1. Johnstone, W.
  2. Thursby, G.
Corporate Authors
Defence R&D Canada - Suffield, Ralston ALTA (CAN);Strathclyde Univ, Glasgow (UK) Electronic and Electrical Engineering Dept
Abstract
The detection of acetylene has been demonstrated at concentrations of 1% and 100 ppm using a photo-acoustic spectroscopy (PAS) test bed based upon a distributed feedback (DFB) laser in combination with a high power erbium-doped fibre amplifier as an excitation source. Photo-acoustic (microphone) signal strengths have been characterized as functions of power, laser centre frequency, and the applied modulation frequency and amplitude. The present PAS DFB system used to detect acetylene might serve as a test bed for the development of a compact, efficient, and lightweight unit for the detection of chemical warfare agents.
Keywords
chemical detection;chemical warfare agent;CWA;point detection;photo-acoustic spectroscopy;distributed feedback laser;erbium dope fibre amplifier;acetylene
Report Number
DRDC-SUFFIELD-CR-2006-185 — Contractor Report
Date of publication
01 Jul 2006
Number of Pages
26
DSTKIM No
CA029590
CANDIS No
527948
Format(s):
CD ROM

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