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Opt Lett. 2009 Nov 1;34(21):3445-7. doi: 10.1364/OL.34.003445.

Ultrasound-modulated optical imaging using a high-power pulsed laser and a double-pass confocal Fabry-Perot interferometer.

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Industrial Materials Institute, National Research Council of Canada, 75 de Mortagne Boulevard, Boucherville, Qu├ębec, Canada J4B 6Y4.


We report the use of short ultrasonic bursts and high-peak-power laser pulses to detect absorbing objects in thick scattering media (SMs). The detection of ultrasound-tagged photons is performed with a double-pass confocal Fabry-Perot interferometer. Photons shifted by the fundamental and harmonic frequencies of the ultrasonic bursts were observed. Absorbing objects were detected in 30- and 60-mm-thick SMs including a sample of biological tissue.

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