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Proceedings Paper

Detection Of Hcl At The Sub-Parts-Per-Billion Level Using Tunable Diode Laser Absorption
Author(s): Alan Fried; Robert Sams; Walter W Berg
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Paper Abstract

We report the results of a laboratory study for detecting the important atmospheric molecule, HC1, using a tunable diode laser coupled to a multipass White cell. In contrast to many such prototype studies, the calibration in this work was carried out near the concentration range of interest and verified using three independent techniques. Employing pathlengths of 40-m, we have demonstrated a detection sensitivity (S/N = 1) in the 250 - 300 parts-per-trillion range at pressures around 9 torr.

Paper Details

Date Published: 26 November 1983
PDF: 8 pages
Proc. SPIE 0438, Tunable Diode Laser Development and Spectroscopy Applications, (26 November 1983); doi: 10.1117/12.937449
Show Author Affiliations
Alan Fried, National Bureau of Standards (United States)
Robert Sams, National Bureau of Standards (United States)
Walter W Berg, National Center for Atmospheric Research (United States)

Published in SPIE Proceedings Vol. 0438:
Tunable Diode Laser Development and Spectroscopy Applications
Chiwoei Wayne Lo, Editor(s)

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