| 摘要 |
Polarized light waves propagate collinearly with acoustical waves in an optically anisotropic media. For nearly matched momentum vectors of the ordinary optical wave, extraordinary optical wave, and acoustic wave, diffraction of light into the orthogonal polarization occurs in a bandwidth determined by the birefringence and length of the media. The diffracted light may be selected by an output analyzer to form a band-pass filter. The operating point of the filter is varied by varying the frequency of the applied acoustical waves. A theory of operation is set forth together with example embodiments.
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