Abstract
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.
© 2012 Optical Society of America
Full Article | PDF ArticleMore Like This
Max Lesaffre, Salma Farahi, François Ramaz, and Michel Gross
Appl. Opt. 52(5) 949-957 (2013)
M. Lesaffre, S. Farahi, M. Gross, P. Delaye, A.C. Boccara, and F. Ramaz
Opt. Express 17(20) 18211-18218 (2009)
Salma Farahi, Emilie Benoit, Alexander A. Grabar, Jean-Pierre Huignard, and Francois Ramaz
Opt. Lett. 37(13) 2754-2756 (2012)