High-power semiconductor laser optical output module capable of being reused

Abstract

The invention relates to the laser field, in particular to a high-power semiconductor laser optical output module capable of being reused. The invention comprises a laser beam reshaping system, a focusing system, an upper ladder base and a lower ladder base. The upper ladder base and the lower ladder base are buttoned together through a respective upper end plane. The laser beam reshaping system is arranged on the steps of the upper ladder base and the lower ladder base. The focusing system is located in the emergent light direction outside the upper ladder base and the lower ladder base. The steps on the lower ladder base are staggered. The contact faces of the steps at different sides in the middle of the lower ladder base present a V shape. The whole step contact face presents V-shaped waves. The structures of the upper ladder base and the lower ladder base are the same. The invention can be reused, has no water cooling and small size and can realize high-power high-light output.

Description

technical field [0001] The invention relates to the field of lasers, in particular to a reusable high-power semiconductor laser fiber output module. Background technique [0002] Semiconductor lasers are used in various aspects of industry and military due to their small size, light weight and high conversion efficiency. However, due to the inherent defects of semiconductor lasers, the beam quality in the slow axis direction is far worse than that in the fast axis direction, the output spot is asymmetrical, and the energy distribution is uneven, which limits its application in some occasions that require high beam quality. The light output through the optical fiber has the advantages of rounded spot and uniform energy distribution. At the same time, it can also achieve arbitrary angle and long-distance transmission. Therefore, the light output through the optical fiber can be well used in laser cutting and laser in industrial processing. punching etc. At the same time, as ...

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Problems solved by technology

[0003] At present, the semiconductor laser module that achieves high power output with a single optical fiber mainly has the following problems: 1) The bar light spot of the semiconductor laser used as the coupling unit is asymmetrical and cannot directly enter the optical fiber. The beam conversion system is expensive and complicated to install and adjust, which undoubtedly increases the cost of the system and the difficulty of debugging; 2) The laser with a power exceeding 60W needs to be cooled by a water-cooling system, which increases the volume and weight of the entire system and is not suitable for practical applications. Convenient; 3) Although semiconductor lasers have a long life, it is inevitable that there will be poor-quality lasers. The general system is not easy to replace the laser. Once a low-quality laser appears in the system, this will lead to a decline in the performance of the entire system

At present, only 2 of the US patent "semiconductor diode lasers with a specific geometry, US6124973, Frannhofer, 2000; Modular diode laser assembly, US0268946, nlight, 2007; Diode laser arrangement with a plurality of diode laser arrays, US689822, Jenoptik Laserdiode" A base, only one row of lasers on the base, low power

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