Photorefractive acousto-optic imaging in thick scattering media at 790 nm with a Sn(2)P(2)S(6):Te crystal.
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 wavefront holographic detection at 790nm, within the optical therapeutic window where absorption of biological tissues is minimized. A high-gain Te-doped Sn(2)P(2)S(6) crystal is used for this purpose. Optical absorbing objects embedded within a thick scattering phantom are imaged by use of pulsed ultrasound to get a dynamic millimetric axial resolution. Our technique represents an interesting approach for breast cancer detection.
Institut Langevin, ESPCI ParisTech, CNRS UMR 7587, INSERM, Laboratoire d'Optique Physique,10 rue Vauquelin, F-75231 Paris Cedex 05, France. salma.farahi@espci.fr
Salma
S
Farahi
Germano
G
Montemezzani
Alexander A
AA
Grabar
Jean-Pierre
JP
Huignard
François
F
Ramaz
D002516:Ceramics; D003460:Crystallization; D054459:Elasticity Imaging Techniques / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D010783:Photometry / Q000295:instrumentation*; D012031:Refractometry / Q000295:instrumentation*; D015203:Reproducibility of Results; D012542:Scattering, Radiation; D012680:Sensitivity and Specificity; D014159:Transducers