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Conferences > CLEO > 1988 > TUL > TUL5
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1988),
  • paper TUL5

Improved system for trace gas detection using homodyne laser interferometry

T. J. F. CARR-BRION, D. MAZZONI, A. GUNGOR, and CHRISTOPHER C. DAVIS

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Abstract

Photothermal spectroscopy can be used as a sensitive technique for the detection of trace molecules in the atmosphere. The gas sample is heated through the selective absorption by the trace species of an excitation laser, usually a CO2 laser. In our implementation of the technique the resulting heating effect is detected by optical homodyne laser interferometry.

© 1988 Optical Society of America

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