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A Disc Laser Based on Three Paraboloids

A laser and paraboloid technology, applied in the field of lasers, can solve problems such as inconvenience, and achieve the effects of improving distortion, high laser output, and light weight

Active Publication Date: 2019-08-13
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when building multiple passes through the disc crystal resonator, the above-mentioned multiple pumping techniques are not convenient for building such a complex cavity due to the above-mentioned angle constraints.

Method used

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  • A Disc Laser Based on Three Paraboloids
  • A Disc Laser Based on Three Paraboloids
  • A Disc Laser Based on Three Paraboloids

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as figure 1 As shown, a disk laser based on three paraboloids includes a pumping light source, a pumping light collimator, a disk laser crystal, multiple pumping units, and a resonant cavity output unit, wherein,

[0050] The pump light source, for example, can be a stack of semiconductor lasers. The beams have different divergence angles and spot sizes in the fast axis and slow axis directions, and the beam quality is poor. The light beam emitted by it is collimated by the pump light collimator to obtain pump light c1 and enter into such as figure 1 The multi-pumped unit is shown in . If a cylindrical mirror is used for shaping, the obtained rectangular spot is obtained. When the divergence angles of the fast axis and the slow axis are equal, a rectangular spot is formed on the disc laser crystal a4; if a semiconductor laser with a pigtail is used, then The collimated pump light is a circular beam.

[0051] The disk laser crystal a4 is connected to the metal co...

Embodiment 2

[0066] Such as Figure 5a As shown, a part of the left side of the second parabolic reflector a2 in Embodiment 1 is cut off, and a right-angle reflective prism a9 is placed at the cut position. The right-angle reflective prism a9 is combined with the rest of the second parabolic reflector a2 to replace the second parabolic reflector a2 in the first embodiment. And the second pump light incident hole b2 is not provided on the third parabolic reflector a3.

[0067] The outgoing light on the rectangular reflective prism a9 is parallel to the incident light, but there will be a displacement in space. Below in conjunction with accompanying drawing, specify the specific positional relation of rectangular reflective prism a9 and the second parabolic reflector a2, as Figure 5b As shown, d in the figure represents the width of the right-angle reflective prism a9, H represents the width of the second parabolic reflector a2, L represents the length of the right-angled side of the righ...

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Abstract

The invention discloses a disc laser based on three parabolic surfaces, and belongs to the technical field of lasers. The disc laser comprises a pump light source, a pump light collimator, a disc laser crystal, a multi-pump unit and a resonant cavity output unit, wherein the multi-pump unit includes a first parabolic reflecting mirror, a second parabolic reflecting mirror, a third parabolic reflecting mirror, a first correcting mirror and a second correcting mirror, the disc laser crystal is located at the focus of the first parabolic reflecting mirror, the second parabolic reflecting mirror and the third parabolic reflecting mirror are symmetrically place above and below the disc laser crystal, the first correcting mirror and the second correcting mirror are respectively located at the focuses of the second parabolic reflecting mirror and the third parabolic reflecting mirror, and the middle of the first parabolic reflecting mirror is provided with a through hole which is used for constructing a V-shaped laser resonant cavity. The disc laser disclosed by the invention solves an angle restriction problem of constructing the V-shaped cavity while guaranteeing the number of pumps through improving the pump structure, and improves the flexibility of resonant cavity construction while achieving high-power and high-beam quality laser output.

Description

technical field [0001] The invention belongs to the technical field of lasers, and relates to a three-paraboloid compact disk multiple pumping system, more specifically, to a three-paraboloid-based disk laser. Background technique [0002] The disk laser is one of the high-end high-power solid-state lasers. This thin sheet structure (thickness of 0.2mm to 0.4mm) adopts the axial surface cooling method, which greatly reduces the thermal distortion and thermal lens effect of the laser crystal. , which is conducive to obtaining laser output with high conversion efficiency, high average power and high beam quality. However, due to the shortcoming of the thin-sheet geometry, the absorption length of the pump light is small, in order to improve the absorption efficiency of the pump light, multiple pumping technology and spot homogenization technology are the core technologies for the efficient and stable operation of high-power disk solid-state lasers . In 1994, Professor A.Gies...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/081H01S3/08
CPCH01S3/08059H01S3/0815
Inventor 朱广志董静余金波朱晓王海林
Owner HUAZHONG UNIV OF SCI & TECH