The system used intense acoustic bursts and a charge-coupled device (CCD) camera- based speckle contrast detection method.

Experimental measurements obtained with a CCD- based speckle contrast detection scheme are in agreement with Monte Carlo simulations and analytical calculations.

A CCD- based speckle-contrast detection scheme is used to detect acoustically modulated light by measuring changes in speckle statistics between ultrasound-on and ultrasound-off states.

By using intense acoustic bursts and a CCD camera- based speckle contrast detection technique, we observed variations of the ultrasound-modulated signal at various optical absorptions.