A pump source device, laser source device and design method thereof

Abstract

The invention discloses a pumping source device, a laser source device and a design method thereof. The pumping source device outputs hollow pump light, and comprises: a ring laser array, a focusing lens and an optical fiber; the ring laser array includes ring-shaped distributed A plurality of lasers are used to output multiple beams of laser light; the focusing lens includes one or more lenses, which are used to converge and couple multiple beams of laser light into the optical fiber; the optical fiber is used to output a pump with a hollow distribution of light spot intensity Light. The principle of the pumping source device built by the technical solution provided by the present invention is simple and the configuration is reasonable. Compared with the prior art, no additional beam conversion elements need to be added, and the optical path is simple, the construction difficulty is low, the optical path stability is high, and the cost is low. , high practicability and other significant advantages; and then use the hollow pump light output by the pump source device to obtain a hollow laser, which is of great significance to various fields that currently use hollow laser for scientific research and production .

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a pump source device, a laser source device and a design method thereof. Background technique [0002] For a long time, solid laser beams have been widely used in traditional laser processing industries such as cutting, cladding, welding and marking. With the continuous development of laser technology, in recent years, various laser beams with lower central intensity—— Hollow laser beams have been produced one after another. Hollow laser beams have broad application prospects in optical information processing, microelectronics, material science, biotechnology, medicine and other fields, which also promotes the further optimization of reflective beam forms in many traditional laser application fields. For traditional laser processing applications such as laser shock forming, hollow beams also offer certain advantages. [0003] There are two types of hollow laser beam generation. O...

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Problems solved by technology

[0004] However, in the prior art, it is often necessary to convert the pump light from a solid form to a hollow form in order to generate a hollow pump light, which requires additional beam conversion elements, resulting in a complex optical path for the pump optical system that outputs the hollow pump light. Defects such as high difficulty in construction, poor optical path stability, high cost, and poor implementability

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