Semiconductor laser side-face pumping solid strip laser

Abstract

It is a semi-conductor laser side pump solid ribbon laser, which is characterized by the following: the laser activation medium is laser solid ribbon of cuboid thin slice; the output pump light from semi-conductor laser pump is shaped into an one-dimensional parallel light of quadrate section; the light beam diameter of the pump light along thickness direction is less than half of the laser solid ribbon thickness; the pump light goes into the laser solid ribbon from the side of the solid ribbon; the laser solid ribbon dissipate heat from upper and down surfaces.

Description

technical field [0001] The invention relates to a semiconductor laser pumped solid slab laser, in particular to a semiconductor laser side pumped solid slab laser with high power, high beam quality and high efficiency. Background technique [0002] With the increase of the output power of the solid-state laser, the heating of the solid-state laser itself will cause the distortion of the laser active medium—laser crystal, laser glass, etc., resulting in a decrease in the quality of the output laser beam. How to increase the laser output power at the same time, Effectively maintaining the output beam quality of high-power solid-state lasers has always been an urgent problem to be solved in the design and manufacture of solid-state lasers. The same problem exists for solid-state slab lasers. In order to solve the problem of the output beam quality of high-power lasers, there are three main solid-state slab lasers today: the first is the solid-state slab laser with zigzag propa...

AI Technical Summary

Problems solved by technology

In order to solve the problem of the output beam quality of high-power lasers, there are three main solid-state slab lasers today: the first is the solid-state slab laser with zigzag propagation, in this laser slab laser, due to the When the laser beam is reflected by the surface of the laser solid slab, it will still cause a decrease in beam quality, and because the laser beam propagates along the zigzag in the laser slab, the alignment of the laser is difficult and the structure is complicated; the second type It is a multi-layer solid slab laser, but the processing technology of the multi-layer laser solid slab is complicated. At the same time, when the output power is high, the multi-layer structure of the laser solid slab is easily damaged, so that the multi-layer structure of the solid The slab laser cannot guarantee high-power output; the third type is the end-pumped solid slab laser. In this type of laser, the pump light enters the laser slab from the end face of the laser solid slab. , which limits the entry of high-power pump light, so this kind of laser cannot achieve high-power laser output

In short, several existing solid-state slab lasers cannot meet the requirements of obtaining high beam quality while obtaining high power output, and all have the defects of complicated manufacturing process and high processing cost

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