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Proceedings Paper

Monte Carlo simulations of acousto-optics with microbubbles
Author(s): Jack Honeysett; Eleanor Stride; Terence Leung
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Paper Abstract

Acousto-optic (AO) signals can be very weak and the aim of this work was to investigate their amplification using microbubbles. The acoustic pressure radiated by the microbubbles produces refractive index changes in the surrounding medium, and this is proposed as an additional mechanism which modulates the phase of photons. The analytical form of this additional modulation is derived based on the Rayleigh-Plesset equation, which describes microbubble oscillations, in the case where the microbubble oscillations are linear under low applied ultrasound pressure. We show that microbubbles can increase the modulation depth of the AO signal using Monte Carlo simulations. The increase in modulation depth is dependent on the applied ultrasound frequency and the resonance frequency of the microbubbles.

Paper Details

Date Published: 23 February 2010
PDF: 7 pages
Proc. SPIE 7564, Photons Plus Ultrasound: Imaging and Sensing 2010, 75640K (23 February 2010); doi: 10.1117/12.842030
Show Author Affiliations
Jack Honeysett, Univ. College London (United Kingdom)
Eleanor Stride, Univ. College London (United Kingdom)
Terence Leung, Univ. College London (United Kingdom)

Published in SPIE Proceedings Vol. 7564:
Photons Plus Ultrasound: Imaging and Sensing 2010
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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