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Function-doping based transparent ceramic slab pumping device

A technology of transparent ceramics and pumping devices, applied in the structure/shape of active medium, laser parts, active medium materials, etc., to achieve the effect of reducing longitudinal thermal gradient, high beam quality and high efficiency, high power pumping

Active Publication Date: 2013-01-23
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problem of longitudinal thermal gradient in the scheme of pumping slab lasers with large surface areas on the upper and lower surfaces in existing high-power slab lasers, and provides a transparent ceramic slab pumping device based on function doping

Method used

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  • Function-doping based transparent ceramic slab pumping device

Examples

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Embodiment 1

[0039] The specific structure reference of this embodiment 1 image 3 ; In this embodiment, a pair of Nd:YAG transparent ceramic slab pumping devices based on function doping with uniform pump light absorption and small longitudinal thermal gradient are produced, and the laser light in the laser resonator propagates along the "one" shape.

[0040] The laser gain medium adopts Nd:YAG transparent ceramic strip 1-0 doped with Nd ion function. The transparent ceramic strip 1-0 is a rectangular strip with a size of 80mm long×50mm wide×3mm high. The upper and lower surface areas are respectively 80mm×50mm, the area of ​​the left end surface and the right end surface are 50mm×3mm respectively, and the areas of the front side and the rear side are 80mm×3mm respectively.

[0041] Nd:YAG transparent ceramic slats 1-0 are placed and fixed on the cooling surface of the cooling temperature control device 2-1, the pump source 3-1 is placed on the pump source cooling device 3-2, and the pump...

Embodiment 2

[0049] In this embodiment, an Er:YAG transparent ceramic slab laser pumping device with uniform absorption of pump light and small longitudinal thermal gradient is fabricated. This embodiment is similar to Embodiment 1.

[0050] The difference with embodiment 1 is mainly:

[0051] 1. The transparent ceramic laser medium is Er: YAG rectangular transparent ceramic slabs

[0052] 2. The ion doping method of transparent ceramic laser medium is discrete function doping, see Figure 5 (Above), the upper and lower surfaces of the transparent ceramic slabs are doped in three layers, and the initial value of the doping concentration is f 0 =1 at.%, α 0 =0.03, r 0 =0.001, the doping concentration and thickness of each doping layer simulated by the computer are: 1at.%, 1.05at.%, 1.15at.% and 4.9mm, 0.05mm, 0.05mm, the doping concentration function of the ceramic plate The distribution of absorbed power and absorption rate inside the bar are as follows: Figure 4 (bottom left) with ...

Embodiment 3

[0058] In this embodiment, a Yb:YAG transparent ceramic slab laser pumping device with uniform absorption of pump light and small longitudinal thermal gradient is produced. This embodiment is similar to Embodiment 1.

[0059] The difference with embodiment 1 is mainly:

[0060] 1. The transparent ceramic laser medium is Yb:YAG transparent ceramic slabs.

[0061] 2. The lower surface 1-4 of the transparent ceramic slats is the pumping surface, which is coated with a pumping mask; the upper surface 1-3 is a cooling and heat dissipation surface, which is coated with a cooling and heat dissipation mask.

[0062] 3. The pump source is a semiconductor laser near 938nm.

[0063] 4. The coating systems of the transparent ceramic slats are: the pumping mask is a high-transparency film for 938nm pump light, the cooling and heat dissipation mask is a high-reflection film for 938nm pump light, and the end film is a 1029nm laser 0° high-transparency film .

[0064] 5. The coatings of t...

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Abstract

The invention relates to a function-doping based transparent ceramic slab pumping device. The pumping device comprises a laser gain medium, a pumping source, a laser resonator and a cooling temperature control device. According to the pumping device provided by the invention, slab transparent ceramic material is taken as the laser gain medium, a mode of pumping in large areas on upper and lower surfaces is adopted to increase the pumping area, reduce the reshaping difficulty of the pump light, and improve the maximum pumping power; and by using the characteristics of high-concentration doping and function doping of the transparent ceramic material, the high power pumping and the uniform absorption of the pumping light by the transparent ceramic material can be implemented, thereby reducing the internal longitudinal heat gradient of the transparent ceramic material, and improving the absorbing efficiency of the pumping light by the material and the output beam quality. Compared with an existing high-power slab laser pumping device, the pumping device provided by the invention is large in pumping area, low in reshaping difficulty of the pump light and small in internal heat gradient of the laser gain medium, and therefore, high-power pumping and the outputting of solid laser with high average power, high beam quality and high efficiency can be carried out.

Description

technical field [0001] The invention relates to a pumping device in the field of all-solid-state lasers, in particular to a transparent ceramic slab pumping device based on functional doping, which has the advantages of large pumping area, low difficulty in pumping light shaping and small thermal gradient inside the laser gain medium Features, can achieve high-power pumping and solid-state laser output with high average power, high beam quality and high efficiency. Background technique [0002] With the continuous development of laser technology, all-solid-state high-power lasers are widely used in civil (such as industrial material processing, cutting, heat treatment, marking) and military (such as ranging, laser radar, photoelectric countermeasures) due to their compact structure and high peak power. ) and space communications have shown important application prospects. Traditional high-power solid-state lasers use round rod-shaped laser gain media. Under the pumping cond...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/16H01S3/06H01S3/0941
Inventor 薄勇宗楠申玉许祖彦彭钦军
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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