17 February 2011 Photorefractive acousto optic imaging in the therapeutic window
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Acousto-optic imaging is based on ultrasound modulation of multiply scattered light in thick media. We experimentally demonstrate the possibility to perform a self-adaptive wave-front holographic detection at 790 nm, within the optical therapeutic window where absorption of biological tissues is minimized. A high-gain Te-doped Sn2P2S6 bulk crystal is used for this purpose. We image optical absorbing objects embedded within a thick scattering phantom by use of pulsed ultrasound to get a dynamic millimetric axial resolution. Our technique represents an interesting approach for breast cancer detection.
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Salma Farahi, Salma Farahi, Germano Montemezzani, Germano Montemezzani, Alexander A. Grabar, Alexander A. Grabar, Jean-Pierre Huignard, Jean-Pierre Huignard, François Ramaz, François Ramaz, } "Photorefractive acousto optic imaging in the therapeutic window", Proc. SPIE 7899, Photons Plus Ultrasound: Imaging and Sensing 2011, 789918 (17 February 2011); doi: 10.1117/12.871217; https://doi.org/10.1117/12.871217

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