OPTICAL TIME REVERSAL BY ULTRASONIC ENCODING IN BIOLOGICAL TISSUE

摘要

Generating an optical-phase conjugation of ultrasonically-modulated diffuse light emitted by a scattering medium includes illuminating the medium with a light beam from a coherent light source, modulating the diffuse light transmitted through the medium with an ultrasonic wave focused on a region of interest within the medium, and retro-reflectively illuminating the medium using a phase-conjugated copy of the diffuse light that was ultrasonically modulated.