Simulating the phenomenon of digitally time-reversed ultrasound-encoded light
Journal
Progress in Biomedical Optics and Imaging - Proceedings of SPIE
Journal Volume
8581
Date Issued
2013
Author(s)
Ting, W.-L.
Abstract
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.
Type
conference paper