METHOD OF MEASURING CENTRAL FREQUENCY OF RANGE OF ANISOTROPIC ACOUSTOOPTICAL DEFLECTOR Russian patent published in 2012 - IPC G02F1/33 

FIELD: physics.

SUBSTANCE: method involves exciting an acoustic wave in the photoelastic medium of an anisotropic acoustooptical deflector using a multi-element electroacoustic transducer. The period of the elements of the transducer is selected in accordance with a predetermined relationship between the central frequency of the range of the anisotropic acoustooptical deflector and the period of elements of the multi-element transducer. The anisotropic acoustooptical deflector is tuned by varying the angle of incidence of light onto the photoelastic medium for operation with one of the acoustic side lopes of the beam pattern of the multi-element transducer. The relationship between the central frequency of the range of the anisotropic acoustooptical deflector and the period of elements of the transducer is determined based on frequency-angle characteristics of the anisotropic acoustooptical deflector with the multi-element electroacoustic transducer, obtained for the given interval of periods of the elements of the converter.

EFFECT: possibility of selecting the central frequency of the range of an anisotropic acoustooptical deflector without changing the crystal section geometry.

3 dwg