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Light beam shrinking device and method thereof

A beam shrinking and beam shrinking technology, which is applied in laser devices, semiconductor laser devices, lasers, etc., can solve problems such as waste of space, mismatching of fiber end faces, etc., to improve beam quality, reduce aberration, and increase duty cycle and output power Effect

Pending Publication Date: 2021-01-22
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the general spatial beam combining method combines multiple semiconductor laser (LD) emitting units into a rectangular array emitting unit for fiber coupling. The advantage is that the structure is simple, and it is easy to eliminate the dark area between the units. Shaped fiber end faces do not match, and there is a waste of space for combining bundles around the rectangle

Method used

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  • Light beam shrinking device and method thereof
  • Light beam shrinking device and method thereof
  • Light beam shrinking device and method thereof

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Embodiment Construction

[0031] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. It should be understood, however, that these descriptions are exemplary only, and are not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present disclosure.

[0032] The terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting of the present disclosure. The terms "comprising", "comprising", etc. used herein indicate the presence of stated features, ...

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Abstract

The invention provides a light beam shrinking device, and the device comprises N single-tube semiconductor lasers which are used for generating N laser beams, wherein one single-tube semiconductor laser forms a regular polygon array, and the other single-tube semiconductor laser is arranged at the central position of the regular polygon array; N groups of collimating lenses which respectively correspond to the N parallel laser beams, wherein each group of collimating lenses comprises a fast-axis collimating lens and a slow-axis collimating lens which are respectively used for collimating the laser beams on a fast axis and a slow axis to obtain N parallel laser beams; and the N-1 pieces of plate glass which respectively correspond to the N1 parallel laser beams in the regular polygon arrayand are used for refracting the N1 parallel laser beams, so that the N1 parallel laser beams are converged to the laser beam in the center. The invention further provides a light beam shrinking method.

Description

technical field [0001] The present disclosure relates to the technical field of semiconductor lasers, in particular to a beam shrinking device and a method thereof. Background technique [0002] Compared with other lasers, semiconductor lasers have the advantages of small size, high electro-optic conversion efficiency, long life, and strong stability. Nowadays, fiber-coupled semiconductor laser modules have been widely used in optical fiber communications, laser medical treatment, and pumping solid-state lasers, especially in industrial processing. Field, known as the fourth generation light source. In the field of material processing, due to the difficulty in processing non-ferrous metal materials with near-infrared lasers, short-wavelength blue-green semiconductor lasers have become an effective means to solve these technical difficulties due to the high absorption rate of materials. For example, the absorption rate of copper-based materials for 450nm blue light is more t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/40
CPCH01S5/4025H01S5/4012
Inventor 林学春丁兵赵鹏飞常亮于海娟
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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