Ultrasound-modulated optical imaging using a powerful long pulse laser
Optics Express, Vol. 16, Issue 17, pp. 12577-12590 (2008)
http://dx.doi.org/10.1364/OE.16.012577
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Abstract
Ultrasound-modulated optical imaging (or tomography) is an emerging biodiagnostic technique which provides the optical spectroscopic signature and the localization of an absorbing object embedded in a strongly scattering medium. We propose to improve the sensitivity of the technique by using a pulsed single-frequency laser to raise the optical peak power applied to the scattering medium and thereby collect more ultrasonically tagged photons. Moreover, when the detection of tagged photons is done with a photorefractive interferometer, the high optical peak power reduces the response time of the photorefractive crystal below the speckle field decorrelation time. Results obtained with a GaAs photorefractive interferometer are presented for 30- and 60-mm thick scattering media.
© 2008 Optical Society of America
OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.7050) Medical optics and biotechnology : Turbid media
(170.1065) Medical optics and biotechnology : Acousto-optics
(120.1088) Instrumentation, measurement, and metrology : Adaptive interferometry
ToC Category:
Medical Optics and Biotechnology
History
Original Manuscript: June 2, 2008
Revised Manuscript: July 15, 2008
Manuscript Accepted: July 31, 2008
Published: August 5, 2008
Virtual Issues
Vol. 3, Iss. 10 Virtual Journal for Biomedical Optics
Citation
Guy Rousseau, Alain Blouin, and Jean-Pierre Monchalin, "Ultrasound-modulated optical imaging
using a powerful long pulse laser," Opt. Express 16, 12577-12590 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-17-12577
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