ACOUSTO-OPTICAL LASER SHUTTER WITH THERMAL ENERGY EXTRACTION FROM LASER RESONATOR Russian patent published in 2021 - IPC G02F1/11 H01S3/117 

FIELD: quantum electronics, laser technology and acousto-optics.

SUBSTANCE: invention relates to quantum electronics, laser technology and acousto-optics, in particular, it can be attributed to acousto-optic (AO) devices for Q-switching of laser resonators in the visible, near and mid-infrared (MI) wavelength ranges (from 0.4 to 5.0 microns). The claimed acousto-optic shutter consists of a light and sound conductor placed in a laser resonator and made of acousto-optic material, having input and output optical edges with antireflection coatings and parallel to each other first and second acoustic edges, to which, respectively, a piezoelectric transducer and a piezoelectric absorber, made in the form of single crystal plates based on lithium niobate and having identical linear dimensions, thickness and orientation, are connected with an identical technology, and also from the first electrical matching system, the input of which is connected to the output resistance of the driver, and the output to the input of the piezoelectric transducer and from the second electrical matching system, the input of which is connected to the output of the piezoelectric absorber, and the output is connected by means of a coaxial HF cable to the input of the electrical load removed from resonator and installed on the heat sink.

EFFECT: invention lowers the temperature of the AO-shutter to the permissible temperature under conditions of operation with a given diffraction efficiency, reduces the control HF power, increases the reliability and expands the areas of application of AO-devices in laser systems towards the long-wavelength part of the MI wavelength range (from 3 to 5 microns).

5 cl, 1 dwg