Slow light filters with MHz frequency resolution for enhancing the contrast in ultrasound-modulated optical tomography
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abstract
Ultrasound-modulated optical tomography (UOT) is a promising method to go beyond the 5cm hard depth detection limit[1]. The principal idea of UOT is to use the acousto-optic effect, where the ultrasound shifts the frequency of the light. The resolution of UOT ( mm) is determined by the ultrasonic wave focus and duration, and the UOT contrast is determined by the optical properties of the tissue [2]. 2011 IEEE.
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12th European Quantum Electronics Conference CLEO EUROPE/EQEC