Nonresonant Referenced Laser-Induced Thermal Acoustics Thermometry in Air
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 (vS) 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 vS. Comparing thermocouple temperatures with temperatures deduced from our vS 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
[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
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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