2006
DOI: 10.1063/1.2219764
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Bifrequency acousto-optic beam splitter

Abstract: In this article, we present a bifrequency acousto-optic beam splitter used to select independently the two polarization states of an arbitrary polarized input beam with two acoustic carriers. We make use of a dual frequency anisotropic interaction in the crystal, two acoustic waves diffract the optical beam, each frequency being tuned for interaction with only one of the beam polarizations. We explain how this double interaction is made possible by a proper cut of the paratellurite crystal and for a chosen lau… Show more

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Cited by 4 publications
(8 citation statements)
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“…Compared to piezoelectric transducer, a laser beam can be a good sensor to receive ultrasound with no interference from the sound field, which is based on the acousto-optic effect. Acousto-optics has been widely used to make tunable optical filters, modulators, and Q-switches [26][27][28][29][30]. Research focused on quantitative analyses for ultrasound that uses acousto-optic diffraction began with Raman and Nath [31] in 1936.…”
Section: Introductionmentioning
confidence: 99%
“…Compared to piezoelectric transducer, a laser beam can be a good sensor to receive ultrasound with no interference from the sound field, which is based on the acousto-optic effect. Acousto-optics has been widely used to make tunable optical filters, modulators, and Q-switches [26][27][28][29][30]. Research focused on quantitative analyses for ultrasound that uses acousto-optic diffraction began with Raman and Nath [31] in 1936.…”
Section: Introductionmentioning
confidence: 99%
“…When the incident optical wave is unpolarized, the two diffraction types generally occur at two different frequencies. Nevertheless, simultaneous diffraction of both linear polarization states with equal efficiency is possible at a very specific operating point (see [7] for a detailed description). In the latter case, there is "Double Diffraction" [10] with two diffracted light beams at the crystal output, as well as potentially a transmitted light beam (that fades out under appropriate acoustic power), as illustrated in figure 1.…”
Section: Simultaneous Diffraction Of Unpolarized Lightmentioning
confidence: 99%
“…Consequently, the case of Double Diffraction for one wavelength can only be achieved for one specific parameter pairing: the acoustic interaction frequency (proportional to K) and the incident angle [7]. As it is considered that the third parameter, the optical wavelength, depends on the characteristics of the incident light to be analysed, these characteristics cannot be tuned experimentally.…”
Section: Simultaneous Diffraction Of Unpolarized Lightmentioning
confidence: 99%
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