Here we attempt to simulate the macroscopic light scattering phenomenon involving digitally time-reversed ultrasound-encoded light, which combines optical phase conjugation with ultrasound encoding, for deep-tissue imaging. By using the focused ultrasound, we can create a virtual source of light frequency shifted due to the acousto-optic effect. Frequency-shifted light emanating from this source is then recorded, and can be used to retrace to the virtual source to form an optical focus deep inside biological tissues. The simulation is done by numerical solutions of Maxwell’s equations, which can accurately account for phase and amplitude of light. The reported simulation enables qualitative and quantitative characterization that may provide important information for enhancement.

Date Published: 4 March 2013
PDF: 6 pages
Proc. SPIE 8581, Photons Plus Ultrasound: Imaging and Sensing 2013, 85814E (4 March 2013); doi: 10.1117/12.2006101

Published in SPIE Proceedings Vol. 8581:
Photons Plus Ultrasound: Imaging and Sensing 2013
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)