Constant temperature control device of frequency doubling crystals of solid laser

Abstract

The invention discloses a constant temperature control device of frequency doubling crystals of a solid laser, comprising a temperature control unit, wherein the temperature control unit is connected with the input end of a power drive circuit via refrigeration control signals and heating control signals, and the output end of the power drive circuit is connected with a semiconductor refrigeration film in a gripper via a drive current line. A light inlet window is used for accommodating the frequency doubling crystals and the gripper is internally provided with a cooling water tunnel. The invention can realize accurate and stable temperature control with the temperature difference range of + / -0.1 DEG C, and has the characteristics of easy implementation and operation. Under the condition of high precision and high stability temperature control, frequency doubling crystals can achieve optimum frequency doubling conversion frequency by matching temperature with phase. The temperature control unit also can be interconnected with a computer via an RS485 interface, thus realizing remote control and parameter management on the temperature of the frequency doubling crystals of the solid laser by a computer.

Description

technical field [0001] The invention belongs to a constant temperature control device, in particular to a constant temperature control device of a solid-state laser frequency doubling crystal. Background technique [0002] In the application field of laser technology, solid-state lasers are widely used in scientific research, production, medical treatment, etc., so the reliability and stability of the laser output of solid-state lasers are particularly important. The frequency doubling crystal is an important part of the solid-state laser. Its main function is to increase the optical power density of the fundamental frequency of the laser by intracavity frequency doubling, thereby improving the conversion efficiency of the laser. Since the phase matching between the fundamental frequency spectral line of the solid-state laser and the frequency-doubling crystal is very sensitive to temperature, its temperature change will seriously affect the performance of the entire solid-s...

AI Technical Summary

Problems solved by technology

The temperature fluctuation of the frequency doubling crystal will lead to frequent changes in the refractive index of the crystal in the crystal, which directly affects the phase matching between the fundamental frequency spectrum line of the solid-state laser and the frequency doubling crystal, which not only reduces the output beam quality of the laser, but also affects the frequency doubling crystal. The frequency doubling efficiency of the solid-state laser will eventually cause the laser power of the solid-state laser to not rise to the level, and the light quality will not meet the requirements of the test system, seriously affecting the experimental work

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