Large-aperture high-power laser frequency doubling crystal edge self-locking clamping device and method

Abstract

The invention relates to a large-aperture high-power laser frequency doubling crystal edge self-locking clamping device and a method. The device comprises a laser frequency doubling crystal, an outersupport frame, a side-direction limiting screw, an edge self-locking clamping device, a pre-tightening screw, a cushion block and the like, wherein the edge self-locking clamping device can form a self-locking structure after being installed in place, and is formed by a clamping device base, an actuating rotating stand, a connecting and limiting block, a rotating support, a rotary shaft and a fixed screw. When an ultraprecise large-aperture laser frequency doubling crystal is assembled and debugged in a high-clean optical assembly environment, only an internal hexagonal wrench needs to be usedfor quickly positioning and clamping an X direction, a Y direction and a Z direction of the crystal in a contactless way, and a clamping force can be further adjusted precisely. The device and the method provided by the invention can meet the engineering requirements on precision, cleanness and high-efficient assembling of the large-aperture high-power laser frequency doubling crystal.

Description

technical field [0001] The invention belongs to the field of precision assembly of optical components, and relates to the precision assembly of large-diameter optical components in high-power laser drivers in inertial confinement fusion devices, in particular to a large-diameter high-power laser frequency doubling crystal edge self-locking clamping device and method. Background technique [0002] The inertial confinement fusion device is a device that uses a high-power solid-state laser driver to inject energy into a deuterium-tritium (DT) target pellet to stimulate a controllable nuclear fusion reaction. As the world's second largest inertial confinement fusion device, my country's Shenguang III device uses 48 beams of high-power lasers to accurately collect 60TW (180kJ) of energy into a 2cm-diameter target pellet within 3ns. The target ball will be frequency doubled by the frequency doubling crystal in the terminal optical component before, because the high frequency laser ...

AI Technical Summary

Problems solved by technology

The currently used clamping tooling has defects such as many parts, low assembly efficiency, poor structural stability, easy contact with the surface of contaminated components, poor controllability and difficult adjustment of the clamping force, which directly leads to serious crystal surface distortion and internal stress distribution. Serious problems such as non-uniformity and decrease in damage threshold lead to low harmonic conversion efficiency and affect the final shooting effect; in addition, since the next-generation fusion device will set up a multiplied laser beam, the number of crystals used will also increase. doubled, the current clamping tooling is also difficult to meet the needs of crystal efficient assembly

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