Laser gain module and liquid cooling circulating device used for same

Abstract

The invention provides a laser gain module, which comprises a liquid cooling circulating device. The liquid cooling circulating device comprises: a main cooling pipe which penetrates through a module body and is used for accommodating and cooling a laser crystal rod, an assistant cooling pipe penetrating through the module body, and a first terminal and a second terminal which are coaxially arranged on two end faces of the module body, wherein the first terminal and the second terminal are internally provided with a first cavity and a second cavity respectively; the first cavity and the second cavity are communicated with a main cooling cavity formed by the main cooling pipe and an assistant cooling cavity formed by the assistant cooling pipe; the first cavity and the second cavity is internally provided with a barrel-shaped first buffer ring and a barrel-shaped second buffer ring respectively; the first buffer ring divides the first cavity into a cooling liquid input cavity and an input buffer cavity; through holes are evenly arranged on a barrel wall of the first buffer ring so as to enable the cooling liquid to be evenly injected into the inner side of the first buffer ring from the outer side of the first buffer ring; the second buffer ring divides the second cavity into a cooling liquid output cavity and an output buffer cavity; and through holes are evenly arranged on a barrel wall of the second buffer ring so as to enable the cooling liquid to be evenly injected into the inner side of the second buffer ring from the outer side of the second buffer ring. According to the invention, the liquid cooling radiating efficiency can be improved, and stable radiating laser output can be obtained simultaneously. In addition, the structure is simple, and an extra space is not occupied.

Description

technical field [0001] The invention relates to the technical field of solid lasers, and in particular, the invention relates to the improvement of a liquid cooling cycle device used in a laser gain module. Background technique [0002] Laser gain blocks are generally used in solid-state lasers. The laser gain module mainly includes a module body, a pump source (such as a target bar) and a laser crystal rod. Both the pump source and the laser crystal rod are installed inside the module body, wherein the pump source is used to provide the required pump light, and the laser crystal rod is used to receive the pump light and generate laser radiation under the excitation of the pump light. In the high-power laser gain laser module, while the pump source provides the required pump light, it also generates a part of waste heat; while the pump light pumps the laser crystal rod, except part of the energy is used for effective pumping , in addition to producing laser radiation, it w...

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Problems solved by technology

However, the increase of the flow rate will also cause the cooling liquid to have a greater impact on the laser rod, which will cause the laser crystal rod to vibrate, resulting in the lack of stability of the generated laser radiation and reducing the output light quality of the laser gain module

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