YAG laser and water-cooling method thereof

Abstract

The invention discloses a YAG (Yttrium Aluminum Garnet) laser and a water-cooling method thereof. The laser comprises a water inlet, a cavity, a cavity base, a cooling sleeve, a pressure balancing slot and a jet ring, wherein the jet ring is horizontally fixed on the cooling sleeve through mounting positions at two ends, and supporting points at two ends of the jet ring are sealed by seal rings; and a suspension part in the middle of the jet ring and the inner channel wall of a cooling water channel form the pressure balancing slot. According to the invention, cooling water flows into the laser from the water inlet and is injected into the pressure balancing slot through the cooling water channel; the periphery of the pressure balancing slot is sealed by the seal rings, so that all the pressure of water flowing into the pressure balancing slot through the cooling water channel is exerted on the outer wall of the jet ring; after the pressure balancing slot is fully filled by the cooling water to obtain a certain water pressure, the water pressure is uniformly exerted on the jet ring; under the action of the water pressure, the cooling water forms jet water columns through jet holes uniformly distributed at the periphery of the jet ring, and the jet water columns are uniformly applied to a YAG rod to take a jet cooling effect; and owing to the uniform cooling water columns, the YAG rod is subject to uniform water pressure in the cooling process.

Description

technical field [0001] The invention belongs to the field of lasers, and more specifically relates to a YAG laser and a water-cooled cooling method for the laser. Background technique [0002] At present, when a solid-state laser pumped by a high-power flash lamp is in operation, the YAG rod absorbs a large amount of pumping light energy to generate local thermal stress and thermal deformation, which causes changes in the reflected light field and spot pattern of the beam. Conventional cooling methods will increase this. A kind of deformation stress, and the mechanical vibration of the YAG rod caused by the uneven impact of the water flow leads to the increase of the disturbance and loss of the resonator laser mode, resulting in the decrease of the laser output power, the deterioration of the beam quality and the deterioration of the beam pointing stability, etc. [0003] In order to control the thermal deformation caused by strong laser irradiation, water cooling has always...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects of the prior art, the object of the present invention is to provide a YAG laser, which aims to solve the problem that the fluid in the water inlet directly acts on the YAG rod on one side in the radial direction in the prior art, and the position of the YAG rod will be shifted after working for a long time As a result, the instability of laser output power and direction and the deterioration of beam quality

Images