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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 36 — Dec. 20, 1998
  • pp: 8327–8335

Frequency-agile bandpass filter for direct detection lidar receivers

Christopher M. Gittins, William G. Lawrence, and William J. Marinelli  »View Author Affiliations


Applied Optics, Vol. 37, Issue 36, pp. 8327-8335 (1998)
http://dx.doi.org/10.1364/AO.37.008327


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Abstract

We discuss the development of a frequency-agile receiver for CO2 laser-based differential absorption lidar (DIAL) systems. The receiver is based on the insertion of a low-order tunable etalon into the detector field of view. The incorporation of the etalon into the receiver reduces system noise by decreasing the instantaneous spectral bandwidth of the IR detector to a narrow wavelength range centered on the transmitted CO2 laser line, thereby improving the overall D* of the detection system. A consideration of overall lidar system performance results in a projected factor of a 2–7 reduction in detector system noise, depending on the characteristics of the environment being probed. These improvements can play a key role in extending the ability of DIAL systems to monitor chemical releases from long standoff distances.

© 1998 Optical Society of America

OCIS Codes
(010.1280) Atmospheric and oceanic optics : Atmospheric composition
(010.3640) Atmospheric and oceanic optics : Lidar
(040.3060) Detectors : Infrared
(120.2230) Instrumentation, measurement, and metrology : Fabry-Perot
(120.4570) Instrumentation, measurement, and metrology : Optical design of instruments
(280.1910) Remote sensing and sensors : DIAL, differential absorption lidar

History
Original Manuscript: March 30, 1998
Revised Manuscript: August 28, 1998
Published: December 20, 1998

Citation
Christopher M. Gittins, William G. Lawrence, and William J. Marinelli, "Frequency-agile bandpass filter for direct detection lidar receivers," Appl. Opt. 37, 8327-8335 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-36-8327


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References

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