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31 May 2002 Acousto-optical imaging of absorbing objects in scattering media
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Abstract
On the basis of the Bragg diffraction model of coherent- optical interaction of laser radiation with ultrasonic wave, the influence of ultrasound axis position and ultrasound frequency value on the amplitude characteristics of ac photodetector current at the ultrasound frequency was theoretically analyzed. For intermediate scattering regime where the ballistic and low-step scattered light components are comparable in their values, the images of the absorbing squares were reconstructed on the base of the ac current amplitude at 3 MHz frequency and dc current distributions. The possibilities of the acousto-optical imaging of scattering medium were discussed on the basis of the results obtained after comparison with traditional measurements of dc photocurrent distributions.
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Aleksandr P. Solov'ev, Yurii P. Sinichkin, Mikhail I. Perchenko, and Olga V. Zyuryukina "Acousto-optical imaging of absorbing objects in scattering media", Proc. SPIE 4705, Saratov Fall Meeting 2001: Coherent Optics of Ordered and Random Media II, (31 May 2002); https://doi.org/10.1117/12.469014
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