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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 6 — Feb. 20, 2001
  • pp: 965–968

Simultaneous velocimetry and thermometry of air by use of nonresonant heterodyned laser-induced thermal acoustics

Roger C. Hart, R. Jeffrey Balla, and G. C. Herring  »View Author Affiliations


Applied Optics, Vol. 40, Issue 6, pp. 965-968 (2001)
http://dx.doi.org/10.1364/AO.40.000965


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Abstract

Nonresonant laser-induced thermal acoustics is used with heterodyne detection to measure temperature (285–295 K) and a single component of velocity (20–150 m/s) in an atmospheric pressure, subsonic, unseeded air jet. Good agreement is found with Pitot-tube measurements of velocity (0.2% at 150 m/s and 2% at 20 m/s) and the isentropic expansion model for temperature (0.3%).

© 2001 Optical Society of America

OCIS Codes
(120.7250) Instrumentation, measurement, and metrology : Velocimetry
(280.7250) Remote sensing and sensors : Velocimetry

History
Original Manuscript: April 27, 2000
Revised Manuscript: September 28, 2000
Published: February 20, 2001

Citation
Roger C. Hart, R. Jeffrey Balla, and G. C. Herring, "Simultaneous velocimetry and thermometry of air by use of nonresonant heterodyned laser-induced thermal acoustics," Appl. Opt. 40, 965-968 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-6-965

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