Large-power 1064 nm near-infrared laser based on wattle structure

A slab structure, high-power technology, applied in the direction of lasers, laser components, phonon exciters, etc., can solve the problems of short absorption length, complex structure design, and limited development, so as to increase power density, improve beam quality, Eliminates the effect of thermal focus

CN103066486AActive Publication Date: 2013-04-24苏州镭创光电技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2013-04-24

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Abstract

The invention discloses a large-power 1064 nm near-infrared laser based on a wattle structure. The large-power 1064 nm near-infrared laser based on the wattle structure is characterized in that the large-power 1064 nm near-infrared laser based on the wattle structure comprises a laser crystal, optical lenses placed on both sides of the laser crystal and a semiconductor laser pumping module, a laser resonant cavity forming pump lights into 1064 nm lasers with high beam quality and a modulating component modulating the lasers, wherein the laser crystal is a wafer with the wattle structure, an optical direction of the pump lights is in the wafer, a M-shaped light path is formed by the lasers in the laser. The large-power 1064 nm near-infrared laser based on the wattle structure has the advantages that the first-order hot focus, the stress birefringence and the depolarization effect can be lightened even eliminated through the reasonable M-shaped light path designed and the curvature radius of the cylindrical mirror chosen appropriately, thus the simple wattle laser structure is used so as to obtain better light bean quality and higher output power. A diaphragm is arranged inside the laser resonant cavity and can further improve the light beam quality.
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Description

technical field

[0001] The invention relates to an all-solid-state laser, in particular to a high-power 1064nm near-infrared laser based on a slab structure. Background technique

[0002] The all-solid-state laser pumped by laser diodes has become one of the hotspots in the research of solid-state laser technology due to its high conversion efficiency, good stability, compact structure, and long service life. Among them, the slab laser has high pumping efficiency and heat dissipation Efficiency is good and widely valued. When a high-power solid-state laser using a rod-shaped working medium operates for a long time, the radial temperature gradient of the working medium causes the rod to exhibit thermal lens effect and birefringence effect, which seriously reduces the beam quality and limits the output level and high repetition rate of the laser. rate operation. For solid-state lasers with a slab structure, a reasonable "M"-shaped optical path can be designed to reduce or ev...

Examples

Embodiment Construction

[0018] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0019] refer to figure 1 , the high-power 1064nm near-infrared laser based on the slab structure of the present invention includes: a laser crystal 4, semiconductor laser pumping modules 1, 7 separated on both sides of the laser crystal 4, arranged between the laser crystal 4 and the semiconductor laser pumping modules 1, 7 The lens 2, 6 between them, the lens 2, 6 forms a lens group, and the laser resonator that forms the pump light emitted by the semiconductor laser pump module 1, 7 into a 1064nm laser with high beam quality, and also includes: the above-mentioned high The beam quality of the 1064nm laser is modulated by the modulation device 9 .

[0020] The laser resonator will be described in detail below.

[0021] refer to figure 1 , the laser resonator is composed of cavity mirrors, specifically cylindrical mirrors 3, 5 and plan...