Fiber coupling module of high-power semiconductor laser

Abstract

The invention relates to a fiber coupling module of a high-power semiconductor laser, which comprises a plurality of single-tube semiconductor lasers with the same wavelength in the same polarization state, beam collimation lenses, a glass flat plate, reflecting prisms and a focusing device, wherein expect one path of the single-tube semiconductor lasers, the other single-tube semiconductor lasers are all parallel to an axis x and arrayed in a ladder shape; the beam collimation lenses are arranged in front of each single-tube semiconductor laser, and the light emitted by each single-tube laser passes through a beam collimation lens and then passes through a reflecting prism; each reflecting prism keeps consistent with a single-tube laser corresponding to the reflecting prism on the horizontal height; the light emitted by the plurality of single-tube lasers is transmitted to the focusing device through reflecting; and beams emitted by the single-tube lasers arranged in the direction of an axis z is directly transmitted to the focusing device through gaps among the plurality of the reflecting prisms and then combined with other beams to focus together and then enter a fiber. In the invention, the distances of the welding positions of each single-tube laser become longer, and the high-power semiconductor laser fiber coupling module has easy welding, convenient debugging, good heat radiating effect and high coupling efficiency.

Description

technical field [0001] The invention relates to the technical field of semiconductor laser fiber coupling, in particular to a high-power semiconductor laser fiber coupling module. Background technique [0002] Because semiconductor lasers (LDs) have the advantages of small size, light weight, high efficiency, long life, and narrow spectral linewidth, they are widely used in medical treatment, pumping, monitoring, and processing. In recent years, with the development of semiconductor laser technology, while increasing the output power and brightness requirements of semiconductor lasers, there are also higher requirements for their stability and life. Most applications in the world use LD line arrays or fiber-optic coupling modules in the form of stacked arrays. Since the heat generated in the middle of each light-emitting point in the bar cannot be completely dissipated, its lifespan is low. In the single-tube laser combination, each single-tube laser is an independent light...

AI Technical Summary

Problems solved by technology

This method requires a complex laser welding process and high welding precision. Each laser must be strictly parallel, which is difficult to guarantee in the welding process. Moreover, since each single-tube laser is very close, it will affect the heat dissipation of the single-tube laser, resulting in Reduced lifespan

Images