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Applied Optics

Applied Optics


  • Vol. 43, Iss. 18 — Jun. 20, 2004
  • pp: 3747–3751

Effective frequency technique for finite spectral bandwidth effects

C. Laurence Korb and Chi Y. Weng  »View Author Affiliations

Applied Optics, Vol. 43, Issue 18, pp. 3747-3751 (2004)

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A technique that uses a single effective frequency to represent the effects of finite spectral bandwidth for active and passive measurements centered on an absorption line, a trough region, or a slowly varying spectral feature is described. For Gaussian and rectangular instrumental line shapes, the effective frequency is shown to have a simple form that depends only on the instrumental line shape and bandwidth and not on the absorption line profile. The technique is applicable to a large class of active and passive measurements and simulations in both the laboratory and the atmosphere. Simulations show that the technique yields accuracies better than 0.1% for bandwidths less than 0.2 times the atmospheric linewidth for a rectangular line shape or better than 0.2% for a Gaussian.

© 2004 Optical Society of America

OCIS Codes
(000.3860) General : Mathematical methods in physics
(010.1320) Atmospheric and oceanic optics : Atmospheric transmittance
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(280.1910) Remote sensing and sensors : DIAL, differential absorption lidar
(300.1030) Spectroscopy : Absorption
(300.6320) Spectroscopy : Spectroscopy, high-resolution

Original Manuscript: June 12, 2003
Revised Manuscript: December 11, 2003
Published: June 20, 2004

C. Laurence Korb and Chi Y. Weng, "Effective frequency technique for finite spectral bandwidth effects," Appl. Opt. 43, 3747-3751 (2004)

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