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Acousto-optical coherence tomography using random phase jumps on ultrasound and light

Abstract : Imaging objects embedded within highly scattering media by coupling light and ultrasounds (US) is a challenging approach. In deed, US enable direct access to the spatial localization, though resolution can be poor along their axis (cm). Up to now, several configurations have been studied, giving a millimetric axial resolution by applying to the US a microsecond pulse regime, as is the case with conventional echography. We introduce a new approach called Acousto-Optical Coherence Tomography (AOCT), enabling us to get a millimetric resolution with continuous US and light beams by applying random phase jumps on US and light. An experimental demonstration is performed with a self-adaptive holographic setup containing a photorefractive GaAs bulk crystal and a single large area photodetector.
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Contributor : Philippe Delaye Connect in order to contact the contributor
Submitted on : Monday, January 10, 2011 - 3:57:37 PM
Last modification on : Sunday, June 26, 2022 - 11:53:03 AM
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  • HAL Id : hal-00554320, version 1


Max Lesaffre, S. Farahi, Michel Gross, Philippe Delaye, Claude Boccara, et al.. Acousto-optical coherence tomography using random phase jumps on ultrasound and light. Optics Express, Optical Society of America - OSA Publishing, 2009, 17 (20), pp.18211. ⟨hal-00554320⟩



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