Doppler effect's contribution to ultrasonic modulation of multiply scattered coherent light: Monte Carlo modeling
Optics Letters, Vol. 33, Issue 2, pp. 131-133 (2008)
http://dx.doi.org/10.1364/OL.33.000131
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Abstract
Modulation of light by ultrasound in turbid media is investigated by modified public domain software based on the Monte Carlo algorithm. Apart from the recognized modulation mechanisms, originating in scatterers’ displacements and refractive index modulation, an additional mechanism, evolving from Doppler shift during photon scattering, is considered. Comparison of the relative contributions from all three mechanisms to light modulation by ultrasound is performed for different medium scattering properties and ultrasound frequencies. Refractive index modulation remains the strongest mechanism for light modulation by ultrasound, but for high ultrasound frequencies and for large scattering coefficients the Doppler effect can become dominant.
© 2008 Optical Society of America
OCIS Codes
(170.3660) Medical optics and biotechnology : Light propagation in tissues
(170.6510) Medical optics and biotechnology : Spectroscopy, tissue diagnostics
ToC Category:
Medical Optics and Biotechnology
History
Original Manuscript: August 31, 2007
Revised Manuscript: November 11, 2007
Manuscript Accepted: November 13, 2007
Published: January 9, 2008
Virtual Issues
Vol. 3, Iss. 2 Virtual Journal for Biomedical Optics
Citation
Jovan M. Elazar and Oleg Steshenko, "Doppler effect's contribution to ultrasonic modulation of multiply scattered coherent light: Monte Carlo modeling," Opt. Lett. 33, 131-133 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-2-131
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