High-power fiber laser amplification stage fiber entrance point replaceable heat exchange module

Abstract

The invention provides a replaceable heat exchange module for an amplification stage fiber entrance point of a high-power fiber laser. The replaceable heat exchange module comprises an amplification stage liquid cooling plate; the fiber inlet point heat exchange module is composed of a water cooling cover with a cavity and a water cooling block with a cavity, the water cooling block is detachably connected to the upper surface of the amplification stage liquid cooling plate, an optical fiber groove is formed in the water cooling block, the water cooling cover is detachably connected to the surface, provided with the optical fiber groove, of the water cooling block, and the water cooling cover is detachably connected to the surface, provided with the optical fiber groove, of the water cooling block. The water cooling cover is communicated with cooling water, and the water cooling block is communicated with the cooling water. The replaceable heat exchange module for the amplification stage fiber entrance point of the high-power fiber laser is good in heat dissipation effect and convenient to disassemble.

Description

technical field [0001] The invention relates to the technical field of high-power fiber laser water cooling and heat dissipation, in particular to a replaceable heat exchange module for a high-power fiber laser amplifier stage fiber entry point. Background technique [0002] High-power fiber laser is a relatively new type of laser developed in recent years. It has the advantages of high conversion efficiency and good beam quality, and has a wide range of applications in industrial processing, scientific research and military fields. At present, single-mode all-fiber lasers with powers of 3kW and above often use the main oscillator power amplifier (MOPA) structure with one-stage amplification of the seed source, and the amplification stage often adopts a double-end pump structure. This method reduces the difficulty of heat dissipation, and at the same time can further inject the cascaded pump laser power from the reverse direction, thereby increasing the total amplified outpu...

AI Technical Summary

Problems solved by technology

When the fiber fusion splicing point is blown, the laser is absorbed by the wall of the fiber slot, and the temperature here rises sharply, up to 3000°C, which is much higher than the melting point of aluminum alloy, which will burn out the fiber slot, and the entire amplifier liquid cooling needs to be replaced during maintenance. board, increasing repair cost and repair time

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