Abstract
The two main constrains on the characteristics of the acousto-optic deflector are the acoustic sound attenuation and velocity. These two parameters will determine the resolution and the radio frequency bandwidth.
Due to a double degenerated phase matching condition on a specific acousto-optic deflector configuration, the possibility of an improvement on the resolution of the acousto optic deflector becomes evident. This degenerescence is the result of the action of a D.C. electric field by the electro-optic effect. This configuration presents several advantages upon the early related works based on optical activity of selected materials and enables a wideband interaction in such a way that the number of resolvable channels is kept high. This has implications on the acousto-optic spectrometers for wideband radio astronomy research.
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Pacheco, G.M., Scalise, E. & Beraldo, N. A new acousto-electro-optic improved resolution deflector for high frequency operation. Int J Infrared Milli Waves 14, 1619–1625 (1993). https://doi.org/10.1007/BF02096220
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DOI: https://doi.org/10.1007/BF02096220