Abstract

A system for measurement of long-path absorption of carbon monoxide has been redesigned for improved performance. The diode laser source is frequency stabilized by automatically correcting the laser current and is limited to a single-wavelength output by a tunable talon. As a result, sensitivity variations of the system to CO are limited to ±0.7%, and system response is linear with respect to CO concentrations.

© 1979 Optical Society of America

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