title: Acousto-optical coherence tomography with a digital holographic detection scheme.
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.
authors.affiliation: Institut Langevin, ESPCI ParisTech, CNRS UMR 7587, INSERM U979, Université Paris VI‐Pierre et Marie Curie, Paris, France. emilie.benoit@espci.fr
authors.forename: Emilie
authors.initials: E
authors.lastname: Benoit a la Guillaume
authors.forename: Salma
authors.initials: S
authors.lastname: Farahi
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Bossy
authors.forename: Michel
authors.initials: M
authors.lastname: Gross
authors.forename: Francois
authors.initials: F
authors.lastname: Ramaz
mesh_terms: D006696:Holography / Q000379:methods*; D019047:Phantoms, Imaging; D012542:Scattering, Radiation; D041623:Tomography, Optical Coherence / Q000379:methods*; D014465:Ultrasonics