Precise adjustment device for nonlinear optical crystal of laser and adjusting method of precise adjustment device

Abstract

The invention provides a precise adjustment device for a nonlinear optical crystal of a laser. The precise adjustment device comprises a pitch adjusting fixture and a direction adjusting base, wherein a groove for accommodating the nonlinear optical crystal is formed in the pitch adjusting fixture; a pitch adjusting groove for accommodating the pitch adjusting fixture is formed in the direction adjusting base, the upper plane of the pitch adjusting fixture is higher than that of the pitch adjusting groove, and the pitch adjusting fixture is in running fit with the pitch adjusting groove; pitch adjusting screw holes and arc-shaped direction adjusting slots are also formed in the direction adjusting base, the pitch adjusting fixture and the direction adjusting base are locked by pitch adjusting screws mounted in the pitch adjusting screw holes, and the direction adjusting base is fixed in the laser by direction adjusting screws mounted in the arc-shaped direction adjusting slots. The invention further provides an adjusting method of the precise adjustment device for the nonlinear optical crystal of the laser. With the adoption of the precise adjustment device and the adjusting method, adjusting steps for the laser can be simplified, and the packaging efficiency and the stability of the laser can be improved.

Description

technical field [0001] The invention relates to the technical field of optical devices and lasers, in particular to a laser nonlinear optical crystal precision adjustment device and an adjustment method thereof. Background technique [0002] The appearance of laser is one of the most important discoveries in the twentieth century. Because of its high directionality, coherence and high brightness, laser has been paid attention to and rapidly applied, especially in mechanical processing, material heat treatment, synthesis and microelectronics. Processing, laser ranging and other aspects have been widely used. Since its inception, laser has become the most important and advanced tool in industrial production. [0003] The thermal management of solid-state lasers, the collimation and fixation of nonlinear optical crystals have always been the difficulties in the development of solid-state lasers. After the nonlinear optical crystal in the laser absorbs the fundamental freque...

AI Technical Summary

Problems solved by technology

After the nonlinear optical crystal in the laser absorbs the fundamental frequency light energy, it cannot be completely converted into frequency-doubled light and emitted. There is always a part of heat loss in the nonlinear optical crystal, which causes the temperature of the nonlinear optical crystal to rise and generate heat. Effects such as lens and heat-induced diffraction loss make the light-to-light conversion efficiency of the nonlinear optical crystal lower, affect the output power and beam quality of the laser, and even damage the nonlinear optical crystal, causing unnecessary economic losses

[0004] The nonlinear optical crystal must be precisely aligned in the laser light path, and a small offset will affect the frequency conversion efficiency

Currently commonly used non-linear optical crystal fixtures have complex structures and usually require auxiliary adjustments with other precision equipment

There is no adjusting and fixing device with a simple structure that can take into account both heat dissipation and collimation of nonlinear optical crystals in the market.

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