Integrated High Power All Fiber Laser

Abstract

An integrated high-power all-fiber laser is characterized in that the left end of a first all-fiber device (1) and the upper end of a first gain fiber (51) are connected by a first melting point (61); the lower end of the first gain fiber (51) and the left end of a second all-fiber device (2) are connected by a second melting point (62); the right end of the second all-fiber device (2) and the upper end of a second gain fiber (52) are connected by a third melting point (63); the lower end of the second gain fiber (52) and the right end of a third all-fiber device (3) are connected by a fourth melting point (64); the left end of the third all-fiber device (3) and the right end of a third gain fiber (53) are connected by a fifth welding point (65); and the left end of the third gain fiber (53) and the right end of a fourth all-fiber device (4) are connected by a sixth welding point (66). Compared with the traditional all-fiber laser, the integrated high-power all-fiber laser has the advantages of more compact structure, high reliability, easy integration, fewer melting points, shorter fibers used, high nonlinear threshold, and the like.

Description

technical field [0001] The invention is an integrated high-power all-fiber laser, which belongs to the field of lasers, especially the field of high-power all-fiber lasers. Background technique [0002] High-power all-fiber lasers have been widely used in industrial processing, national defense, medical and other fields in recent years due to their excellent beam quality, high conversion efficiency, and good heat dissipation. With the continuous expansion of the application field of high-power fiber lasers, the requirements for the output power and beam quality of fiber lasers are getting higher and higher. For example, in the manufacturing industry of automobiles, aircraft, and large ships, the laser forming, welding, and cutting of thick metal plates require the output power of fiber lasers to reach kilowatts or even 10,000 watts. [0003] However, in the manufacture of high-power fiber lasers, due to factors such as the ability to withstand high-power fiber optic devices...

AI Technical Summary

Problems solved by technology

This not only increases the length of the transmission fiber of the fiber laser, but also reduces the threshold of nonlinear effects, and reduces the integration of the fiber laser. At the same time, melting point fusion requires a relatively high level of technology to complete the fine alignment of the fiber core and fiber diameter.

And each all-fiber device must be designed with a corresponding cooling protection device in the high-power fiber laser, increasing the volume of the high-power all-fiber laser

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