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Proceedings Paper

Absorption Measurements Using Frequency Modulation Heterodyne Spectroscopy
Author(s): Edward A . Whittaker; Gary C. Bjorklund
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Paper Abstract

Direct absorption. measurements using Frequency. Modulation. Spectroscopy (FMS) have been made. Simple calibration is possible and DC absorptions as small as 1.4x10-4 may be detected. By modulating the absorption photochemically, the sensitivity may be extended to a lower limit of 1.5x10-7. The radicals HCO1 and ND4 have been studied using this method.

Paper Details

Date Published: 19 October 1983
PDF: 6 pages
Proc. SPIE 0426, Laser-Based Ultrasensitive Spectroscopy and Detection V, (19 October 1983); doi: 10.1117/12.936241
Show Author Affiliations
Edward A . Whittaker, IBM Research Laboratory (United States)
Gary C. Bjorklund, IBM Research Laboratory (United States)

Published in SPIE Proceedings Vol. 0426:
Laser-Based Ultrasensitive Spectroscopy and Detection V
Richard A. Keller, Editor(s)

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