Diospersive acousto-optic filter
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United States of America Patent
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Apr 15, 1986
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N/A
app pub date -
Mar 25, 1983
filing date -
Mar 25, 1983
priority date (Note) -
Expired
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Abstract
An electronically tunable optical filter using acousto-optic interaction in a dispersive birefrigent crystal. The strong wavelength dispersion of birefringence in a class of uniaxial semiconductors near the band gap is utilized to enhance the spectral resolution of the tunable acousto-optic filter. The dispersive tunable acousto-optic filter provides a very large aperture while maintaining an extremely narrow bandwidth.
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