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Optical measurement of acoustic pressure amplitudes—at the sensitivity limits of Rayleigh scattering |
Optics Letters, Vol. 37, Issue 13, pp. 2685-2687 (2012)
http://dx.doi.org/10.1364/OL.37.002685
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Abstract
Rayleigh scattering is a measurement technique applicable for the determination of density distributions in various technical or natural flows. The current sensitivity limits of the Rayleigh scattering technique were investigated experimentally. It is shown that it is possible to measure density oscillations caused by acoustic pressure oscillations noninvasively and directly. Acoustical standing waves in a rectangular duct were investigated using Rayleigh scattering and compared to microphone measurements. The comparison showed a sensitivity of the Rayleigh scattering technique of 75 Pa (
© 2012 Optical Society of America
OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(120.5820) Instrumentation, measurement, and metrology : Scattering measurements
(120.5475) Instrumentation, measurement, and metrology : Pressure measurement
ToC Category:
Instrumentation, Measurement, and Metrology
History
Original Manuscript: January 2, 2012
Manuscript Accepted: April 18, 2012
Published: June 26, 2012
Citation
Anne Rausch, André Fischer, Nancy Kings, Friedrich Bake, and Ingo Roehle, "Optical measurement of acoustic pressure amplitudes—at the sensitivity limits of Rayleigh scattering," Opt. Lett. 37, 2685-2687 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-13-2685
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