Show simple item record

dc.contributor.authorFoote, Kenneth G.  Concept link
dc.contributor.authorTheobald, Peter D.  Concept link
dc.date.accessioned2015-09-29T13:39:36Z
dc.date.available2015-09-29T13:39:36Z
dc.date.issued2015-09-28
dc.identifier.citationJournal of the Acoustical Society of America 138 (2015): 1627en_US
dc.identifier.urihttps://hdl.handle.net/1912/7547
dc.descriptionAuthor Posting. © Acoustical Society of America, 2015. This article is posted here by permission of Acoustical Society of America for personal use, not for redistribution. The definitive version was published in Journal of the Acoustical Society of America 138 (2015): 1627, doi:10.1121/1.4929372.en_US
dc.description.abstractThe acousto-optic effect, in which an acoustic wave causes variations in the optical index of refraction, imposes a fundamental limitation on the determination of the normal velocity, or normal displacement, distribution on the surface of an acoustic transducer or optically reflecting pellicle by a scanning heterodyne, or homodyne, laser interferometer. A general method of compensation is developed for a pulsed harmonic pressure field, transmitted by an acoustic transducer, in which the laser beam can transit the transducer nearfield. By representing the pressure field by the Rayleigh integral, the basic equation for the unknown normal velocity on the surface of the transducer or pellicle is transformed into a Fredholm equation of the second kind. A numerical solution is immediate when the scanned points on the surface correspond to those of the surface area discretization. Compensation is also made for oblique angles of incidence by the scanning laser beam. The present compensation method neglects edge waves, or those due to boundary diffraction, as well as effects due to baffles, if present. By allowing measurement in the nearfield of the radiating transducer, the method can enable quantification of edge-wave and baffle effects on transducer radiation. A verification experiment has been designed.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherAcoustical Society of Americaen_US
dc.relation.urihttps://doi.org/10.1121/1.4929372
dc.titleAcousto-optic effect compensation for optical determination of the normal velocity distribution associated with acoustic transducer radiationen_US
dc.typeArticleen_US
dc.identifier.doi10.1121/1.4929372


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record