Integral cooling device for high-power optical fiber laser or amplifier

A technology for fiber lasers and fiber amplifiers, used in lasers, laser parts, phonon exciters, etc., can solve the inconvenience of high-power fiber lasers or amplifier modularization, cannot provide pump coupler cooling at the same time, and fiber length is limited. and other problems to achieve the effect of increasing the scope of application, preventing fusing or aging, and running for a long time

CN101867143AActive Publication Date: 2010-10-20NAT UNIV OF DEFENSE TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2010-10-20

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Abstract

The invention provides a cooling device for a high-power optical fiber laser or an amplifier. The length of optical fibers arranged in the cooling device is variable, and the cooling device can cool a pump coupler arranged in the high-power optical fiber laser or the amplifier when cooling the optical fibers. The cooling device comprises a cooler pan and a heat conducting cover plate, wherein the cooler pan is a metal block provided with a flat surface; an input concave groove, a coupler concave groove, a helical line-shaped concave groove, a plurality of rewound concave grooves and a plurality of output concave grooves are engraved on the flat surface; the heat conducting cover plate is a metal block provided with a flat surface; and the flat surface of the heat conducting cover plate is not smaller than that of the cooler pan. When the integral cooling device for the high-power optical fiber laser or the amplifier is used, doped optical fibers can be returned to an adjacent former ring through the rewound concave groove when wound in the helical line-shaped groove, and the rewinding can be performed multiple times in the same rewound concave groove.
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Description

technical field

[0001] The invention relates to a cooling device, in particular to an integral cooling device for a high-power fiber laser or a high-power fiber amplifier. Background technique

[0002] When the rare earth element-doped fiber is used in a high-power fiber laser or a high-power fiber amplifier, the doped medium in the fiber generates laser light under the action of pump light, and generates a lot of heat at the same time. If the heat in the fiber is not discharged in time, it will cause the temperature of the fiber to rise, resulting in a decrease in the quality and efficiency of the output laser beam; it will even affect the polymer used to protect the fiber at the outermost layer of the fiber, causing the polymer to age or even fail. It is directly related to the safe and stable operation of high-power lasers or amplifiers.

[0003] At present, there are patent applications (Chinese patents: 200810048538.0 and 200820155746.X) and practical application devic...

Examples

Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention should not be limited thereby.

[0016] Figure 1 to Figure 6 A specific example of the invention is given.

[0017] figure 1 It is a schematic diagram of the external structure of a specific embodiment of the cooling device provided by the present invention. As shown in the figure, the cooling device includes a cooling plate 1 and a heat conduction cover plate 2 , and is connected to a water cooler through a conduit 3 . figure 2 for figure 1 The internal structure schematic diagram of the illustrated embodiment, as shown in the figure, the cooling plate 1 is composed of a cooling plate main body 4 , a front sealing cover 5 and a rear sealing cover 6 . The main body of the cooling plate 4 is a flat metal plate, and the channel 14 runs through the inside so that the cooling liquid can flow ins...