Laser gain module of semiconductor laser monotube combined side pumped solid-state laser

Abstract

The invention provides a laser gain module of a semiconductor laser monotube combined side pumped solid-state laser, which comprises a heat sink, a bar-shaped laser crystal, a reflection cavity, monotube laser diodes and shaping lenses, wherein the heat sink comprises an upper heat sink, a lower heat sink, thermoelectric refrigerating fins and a radiator; the bar-shaped laser crystal is placed in a groove of a protrusion of the lower heat sink; the reflection cavity is placed on the protrusion, and the bar-shaped laser crystal is sleeved in the reflection cavity; the monotube laser diodes are arranged on the sides of regular polygonal through holes in the heat sink to arrange the monotube laser diodes around the reflection cavity in turn, and the light-emitting direction of each diode faces the bar-shaped laser crystal; and the shaping lenses used for evening pumping laser is arranged in the light-emitting direction of the monotube laser diodes. The laser gain module has simple structure, high radiating efficiency, and convenient use.

Description

technical field [0001] The invention relates to a semiconductor laser single-tube combination side-pumped solid-state laser, in particular to a laser gain module used on the laser. Background technique [0002] Laser gain blocks are generally used to pump solid-state lasers. In the high-power laser gain module, while the pump source provides the required pump light, it will also generate a part of waste heat; and in the pumping process, in addition to a part of the energy of the pump light is used for effective pumping to generate laser radiation, It will also generate a lot of waste heat, which will affect the laser output power and beam quality. Therefore, the laser gain block must be cooled. Since most of the laser gain modules in the prior art use a semiconductor laser diode array (Laser Diode Array, hereinafter referred to as LDA) as the pump source, the LDA is generally composed of a plurality of laser bars (bars) connected in series, and each laser bar It is also i...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of complex structure and inconvenient use of the heat sink in the laser gain module of the existing single-tube laser diode, thereby providing a heat sink with a relatively simple structure

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