Detection Of Hcl At The Sub-Parts-Per-Billion Level Using Tunable Diode Laser Absorption

Alan Fried; Robert Sams; Walter W Berg

doi:10.1117/12.937449

26 November 1983 Detection Of Hcl At The Sub-Parts-Per-Billion Level Using Tunable Diode Laser Absorption

Alan Fried, Robert Sams, Walter W Berg

Proceedings Volume 0438, Tunable Diode Laser Development and Spectroscopy Applications; (1983) https://doi.org/10.1117/12.937449
Event: 27th Annual Technical Symposium, 1983, San Diego, United States

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.

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Alan Fried, Robert Sams, and Walter W Berg "Detection Of Hcl At The Sub-Parts-Per-Billion Level Using Tunable Diode Laser Absorption", Proc. SPIE 0438, Tunable Diode Laser Development and Spectroscopy Applications, (26 November 1983); https://doi.org/10.1117/12.937449

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