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A Multipumped Disk Laser

A laser and pump light technology, applied in the field of lasers, can solve the problems of inconvenient assembly and adjustment, complex structure, etc., and achieve the effect of compact overall size, improved output power and output efficiency, and light weight

Active Publication Date: 2021-10-08
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the defects of related technologies, the purpose of the present invention is to provide a compact and efficient multi-pumped disk laser, which aims to solve the technical problems of complex structure and inconvenient assembly and adjustment when the existing disk laser realizes a large folding angle range

Method used

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  • A Multipumped Disk Laser
  • A Multipumped Disk Laser
  • A Multipumped Disk Laser

Examples

Experimental program
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Effect test

Embodiment 1

[0059] The following will take the combination of the paraboloid and the first folding mirror and the second folding mirror as an example, and further describe the present invention in detail with reference to the accompanying drawings. figure 1 It is a schematic diagram of the main structure obtained when observing the multi-pumped disk solid-state laser according to the present invention from one direction. Such as figure 1 As exemplarily shown in , the multi-pumped disk solid-state laser according to the present invention mainly includes a pumping light source, a disk crystal unit, a multi-pumped unit and a resonant cavity unit.

[0060] The pump light source is used to generate collimated pump light. The semiconductor laser array or the semiconductor laser with pigtails output through the optical system can be selected. The cross-section of the collimated pump light can be circular or square. or other shapes, the collimated pump light b1 enters the pump unit multiple time...

Embodiment 2

[0074] Such as Figure 4a As shown, a third folding mirror a4 is placed next to the second folding mirror a2 in Embodiment 1, and the outgoing light on the third folding mirror a4 is parallel to the incident light, but there will be a displacement in space. The third folding mirror a4 is a hollow right-angle prism composed of two identical right-angle prisms. The thickness of the right-angle prism (the side perpendicular to the right-angle side) and the length of the right-angle side should be greater than or equal to the diameter of the cross-section of the pumping light b1. The rectangular prism thicknesses of the first folding mirror a1 and the second folding mirror a2 are also greater than or equal to twice the cross-sectional diameter of the pumping light b1. In this example Figure 4a In this case, the length of the right-angled side of the third folding mirror a4 is set to be half the thickness of the right-angled prism of the second folding mirror a2, and this conditi...

Embodiment 3

[0083] The size relationship and positional relationship of this embodiment prism are different from the previous example, as Figure 5a As shown, the distance between the two rectangular prisms of the first folding mirror a1 is d, the length of the rectangular prisms is L, the length of the rectangular prisms forming the second folding mirror a2 is L+d, where L is an integer multiple of d, and the composition The two rectangular prisms of the second folding mirror a2 are left-right symmetrical about the vertical symmetry axis of the disc crystal unit c1, and the right side of the second folding mirror a2 is aligned with the right side of the first folding mirror a1. If the paraboloid is large enough, the number of reflections of the pump light c1 passing through the disc crystal unit can be calculated Among them, L is required to be an integer multiple of d. The position of the third folding mirror a4 is moved from the side of the second folding mirror a2 in the second embo...

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Abstract

The invention discloses a multi-pumped disc laser, which belongs to the technical field of lasers. It includes a pumping light source; multiple pumping units, including: a parabolic reflector, the parabolic reflector is provided with an opening; a first folding mirror; a second folding mirror, wherein the first folding mirror and the second folding mirror are both Folding mirror with 180-degree reflection; the disc crystal unit is placed at the focal point of the parabolic mirror; the first folding mirror and the second folding mirror are respectively located on the upper and lower sides of the disc crystal unit, and both are located at the reflected light of the parabolic mirror On the road; the resonant cavity output unit, together with the disc crystal unit, constitutes the laser resonant cavity. Through the design of single parabola and multi-fold mirrors, the aperture for laser transmission in the pump unit becomes larger, and the laser resonator can be built in the case of large folding angle and small folding angle at the same time, which can be more convenient Build multiple round-trip resonators with more times to improve the output power and output efficiency of the laser.

Description

technical field [0001] The invention belongs to the technical field of lasers, and more specifically relates to a multi-pumped 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.Giesen proposed the concept of multiple pumps, which made the idea of ​​the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/06H01S3/081H01S3/091H01S3/042
CPCH01S3/042H01S3/0604H01S3/081H01S3/091
Inventor 王海林董静陈涵天朱广志朱晓
Owner HUAZHONG UNIV OF SCI & TECH