Reflective Ultrasound-Modulated Optical Speckle Measurement

Abstract

Ultrasound-modulated optical speckle measurement in a reflection system has been developed and applied to investigate optical measurement for optical highly scattering media with an acoustically impedance-matched optical absorptive object. A series of pulse ultrasound-modulated backscattered speckle patterns were captured by a charge-coupled device camera with stroboscopic illumination and converted to temporal scalar signals in order to obtain depth distribution. The absorption and scattering dependence of the samples close to biological tissue were experimentally studied and investigated.