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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 3 — Jan. 20, 1999
  • pp: 577–584

Nonresonant referenced laser-induced thermal acoustics thermometry in air

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


Applied Optics, Vol. 38, Issue 3, pp. 577-584 (1999)
http://dx.doi.org/10.1364/AO.38.000577


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Abstract

We report a detailed investigation of nonresonant laser-induced thermal acoustics (LITA) for the single-shot measurement of the speed of sound (v S ) in an oven containing room air. A model for the speed of sound that includes important acoustic relaxation effects is used to convert the speed of sound into temperature. A reference LITA channel is used to reduce uncertainties in v S . Comparing thermocouple temperatures with temperatures deduced from our v S measurements and model, we find the mean temperature difference from 300 to 650 K to be 1% (±2σ). The advantages of using a reference LITA channel are discussed.

© 1999 Optical Society of America

OCIS Codes
(190.1900) Nonlinear optics : Diagnostic applications of nonlinear optics
(280.2490) Remote sensing and sensors : Flow diagnostics
(300.6430) Spectroscopy : Spectroscopy, photothermal

History
Original Manuscript: July 22, 1998
Revised Manuscript: September 28, 1998
Published: January 20, 1999

Citation
Roger C. Hart, R. Jeffrey Balla, and Gregory C. Herring, "Nonresonant referenced laser-induced thermal acoustics thermometry in air," Appl. Opt. 38, 577-584 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-3-577

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