Optical fiber coupling semiconductor laser

Abstract

The invention provides an optical fiber coupling semiconductor laser, and relates to the technical field of semiconductor lasers. The optical fiber coupling semiconductor laser comprises a tube shell,a semiconductor laser chip, an aspheric lens, a cylindrical lens and a spherical lens, a heat sink is arranged at the bottom of the inner cavity of the tube shell, and coupling optical fibers are further arranged on the side wall of the tube shell. The semiconductor laser chip is arranged on the heat sink and is far away from the coupling optical fiber; the aspheric lens is arranged between the semiconductor laser chip and the coupling optical fiber, and the aspheric lens is close to the semiconductor laser chip; the cylindrical lens is arranged between the aspheric lens and the coupling optical fiber and is close to the aspheric lens; and the ball lens is arranged between the cylindrical lens and the coupling optical fiber. According to the optical fiber coupling semiconductor laser provided by the invention, the mode of combining the aspheric lens, the cylindrical lens and the spherical lens is adopted, effective shaping of an output light field of the semiconductor laser can be realized in the fast axis direction and the slow axis direction respectively, the stability of output light power is ensured, and the coupling efficiency of the semiconductor laser is improved.

Description

technical field [0001] The invention belongs to the technical field of semiconductor lasers, and more specifically relates to a fiber-coupled semiconductor laser. Background technique [0002] Optical fiber coupler is a component used to realize optical signal splitting or combining, or to extend optical fiber links, and belongs to optical passive components. The fiber coupling module of semiconductor laser has the advantages of small size, light weight, high reliability, long service life and low cost. It has been widely used in various fields of national economy, such as laser pumping, optical fiber sensing, communication and industrial processing. and other fields. [0003] Limited by the structure of the semiconductor, the beam output by the laser is asymmetrical in the two directions of the fast axis and the slow axis, and the divergence angle is relatively large, so it is necessary to shape the light field output by the semiconductor laser. The most commonly used sol...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a fiber-coupled semiconductor laser to solve the technical problems of poor beam shaping effect and low power stability in the prior art

Images