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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 3 — Jan. 20, 2002
  • pp: 573–578

Transportable automated ammonia sensor based on a pulsed thermoelectrically cooled quantum-cascade distributed feedback laser

Anatoliy A. Kosterev, Robert F. Curl, Frank K. Tittel, Rüdeger Köhler, Claire Gmachl, Federico Capasso, Deborah L. Sivco, and Alfred Y. Cho  »View Author Affiliations


Applied Optics, Vol. 41, Issue 3, pp. 573-578 (2002)
http://dx.doi.org/10.1364/AO.41.000573


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Abstract

A compact ammonia sensor based on a 10-µm single-frequency, thermoelectrically cooled, pulsed quantum-cascade laser with an embedded distributed feedback structure has been developed. To measure NH3 concentrations, we scanned the laser over two absorption lines of its fundamental ν2 band. A sensitivity of better than 0.3 parts per million was achieved with just a 1-m optical path length. The sensor is computer controlled and automated to monitor NH3 concentrations continuously for extended periods of time and to store data in the computer memory.

© 2002 Optical Society of America

OCIS Codes
(140.5960) Lasers and laser optics : Semiconductor lasers
(280.3420) Remote sensing and sensors : Laser sensors
(300.6320) Spectroscopy : Spectroscopy, high-resolution

History
Original Manuscript: April 20, 2001
Revised Manuscript: July 31, 2001
Published: January 20, 2002

Citation
Anatoliy A. Kosterev, Robert F. Curl, Frank K. Tittel, Rüdeger Köhler, Claire Gmachl, Federico Capasso, Deborah L. Sivco, and Alfred Y. Cho, "Transportable automated ammonia sensor based on a pulsed thermoelectrically cooled quantum-cascade distributed feedback laser," Appl. Opt. 41, 573-578 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-3-573

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