Three-dimensional refrigeration and mode-controllable efficient optical fiber water cooling method and structure
An optical fiber and mode technology, applied in the field of laser cooling device design, can solve the problems of inability to bend arbitrarily, limit the length of optical fiber, and limit the scope of application, and achieve the effects of improving stability and reliability, reducing possible damage, and improving stability
Pending Publication Date: 2020-04-28
NAT UNIV OF DEFENSE TECH
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Problems solved by technology
However, there are many disadvantages in such a cooling scheme, such as the limited length of optical fiber that can be coiled
Its water-cooling diameter is fixed, it cannot be bent arbitrarily within a certain range, and it cannot control the quality of the beam
In addition, this type of cooling method can only conduct direct contact and conduction cooling on part of the surface of the optical fiber. This cooling efficiency is not very high, and its scope of application is limited, especially for high-power laser amplifiers, which generate a large amount of heat, this cooling scheme will affect the stability of laser work
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[0035] In order to make the technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0036] refer to figure 1 , a high-efficiency optical fiber water-cooled structure with three-dimensional cooling and controllable modes, including a top cover 1, a box body 2 and a bottom cover 3, the top of the box 2 is sealed by the top cover 1, and the bottom of the box 2 is sealed by the bottom cover Plate 3 is sealed. A cooling liquid is provided in the sealed box body 2, and more than one vertical spiral copper tube 4 is provided in the box body 2, and the vertical spiral copper tube 4 is used for passing through an optical fiber. The design of the spiral copper tube 4 as a vertical has the follow...
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The invention provides a three-dimensional refrigeration and mode-controllable efficient optical fiber water cooling method and structure. The cooling device comprises a top cover plate, a box body and a bottom cover plate, the top of the box body is sealed by the top cover plate, the bottom of the box body is sealed by the bottom cover plate, cooling liquid is arranged in the sealed box body, anda cooling liquid inlet and a cooling liquid outlet are formed in the box body, the top cover plate or the bottom cover plate. The cooling liquid is input into the box body from the cooling liquid inlet and output from the cooling liquid outlet. More than one vertical spiral copper pipe is arranged in the box body, and an optical fiber penetrate through the vertical spiral copper pipe. The heat generated by each surface of the optical fiber is conducted to the spiral copper pipe in an omnibearing manner, the spiral copper pipe is completely immersed in the cooling liquid, and the flowing and circulating cooling liquid can rapidly take away the heat generated when the optical fiber in the spiral copper pipe works. The cooling liquid in the box body takes away heat generated by the optical fiber in optical fiber laser in an omnibearing mode, the cooling efficiency is high, and the working stability of the optical fiber laser can be effectively guaranteed.
Description
technical field [0001] The invention relates to the technical field of laser cooling device design, in particular to a three-dimensional cooling and mode-controllable high-efficiency optical fiber water cooling method and structure. Background technique [0002] Fiber laser has the advantages of high conversion efficiency, good beam quality and compact structure, and has broad application prospects in the fields of industry, scientific research and national defense. The main oscillation power amplification (MOPA) structure is mainly used in high-power fiber laser systems. The MOPA structure amplifies the power of medium and low-power seed lasers through one-stage or multi-stage fiber amplifiers, and can obtain higher-power laser output. [0003] With the continuous improvement of the output laser power of existing laser amplifiers, the optical devices in the laser amplifier, especially the optical fibers, will generate a lot of heat, and it is necessary to effectively cool t...
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IPC IPC(8): H01S3/04H01S3/067
CPCH01S3/0407H01S3/06754
Inventor 王小林马鹏飞杨保来王鹏奚小明张汉伟史尘韩凯王泽锋周朴司磊许晓军
Owner NAT UNIV OF DEFENSE TECH