BICHROMATIC ACOUSTO-OPTICAL DEFLECTOR Russian patent published in 2024 - IPC G02F1/33 

FIELD: laser equipment.

SUBSTANCE: invention can be attributed to optical devices for deflecting laser beams. Acousto-optical deflector consists of a light and sound conductor made of a TeO₂ monocrystal and having an acoustic facet, parallel to crystallographic axis [110] of monocrystal and making angle α from minus 4 to minus 6 degrees with crystallographic axis [001] of monocrystal, input optical face with antireflection coating, parallel to crystallographic axis [110] of monocrystal and making angle β from 76.7 to 81.5 degrees with crystallographic axis [001], output optical facet with antireflection coating, parallel to crystallographic axis [110] and perpendicular to acoustic facet, shift piezoelectric transducer made of LiNbO₃monocrystal, connected to acoustic face, as well as electric matching system, output of which is connected to the input of the piezoelectric transducer, wherein the value of the angle β is determined by the functional relationship β=90°+k·α, the coefficient k ranges from 2.12 to 2.22.

EFFECT: simpler design of the bichromatic acousto-optic deflector and wider interval between operating wavelengths.

4 cl, 4 dwg