Acousto-optical coherence tomography with a digital holographic   detection scheme
  Acousto-optical coherence tomography (AOCT) consists in using random phase jumps on ultrasound and light to achieve a millimeter resolution when imaging thick scattering media. We combined this technique with heterodyne off-axis digital holography. Two-dimensional images of absorbing objects embedded in scattering phantoms are obtained with a good signal-to-noise ratio. We study the impact of the phase modulation characteristics on the amplitude of the acousto-optic signal and on the contrast and apparent size of the absorbing inclusion. 
Michel Gross (L2C), Fran\c{c}ois Ramaz, Emilie Benoit, Emmanuel Bossy,   Salma Farahi
physics.optics