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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 14, Iss. 4 — Apr. 1, 1975
  • pp: 854–861

Long-Path Monitoring of Atmospheric Carbon Monoxide with a Tunable Diode Laser System

R. T. Ku, E. D. Hinkley, and J. O. Sample  »View Author Affiliations


Applied Optics, Vol. 14, Issue 4, pp. 854-861 (1975)
http://dx.doi.org/10.1364/AO.14.000854


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Abstract

Long-path measurements of carbon monoxide in the atmosphere are described. The technique of resonance absorption was used in which the wavelength of radiation from a PbS0.82Se0.18 semiconductor diode laser was tuned into coincidence with an absorption line of CO in its fundamental band around 4.7 μm. By employing rapid frequency modulation of the laser emission to overcome atmospheric turbulence effects, it was possible to achieve a minimum detectable concentration of 5 parts per billion over a 0.61-km path. Continuous around-the-clock monitoring was also performed and permitted increases in the ambient CO level due to commuter traffic to be observed.

© 1975 Optical Society of America

History
Original Manuscript: July 17, 1974
Published: April 1, 1975

Citation
R. T. Ku, E. D. Hinkley, and J. O. Sample, "Long-Path Monitoring of Atmospheric Carbon Monoxide with a Tunable Diode Laser System," Appl. Opt. 14, 854-861 (1975)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-14-4-854

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