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Solid laser gain module using batten-shaped sectional doped gain medium

A gain medium and solid-state laser technology, applied to the structure/shape of the active medium, lasers, laser components, etc., can solve problems such as large temperature differences and inability to effectively improve pumping uniformity, and reduce thermal stress and eliminate heat. Lens effect, the effect of enlarging the expanded space

Inactive Publication Date: 2006-10-11
TSINGHUA UNIV
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Problems solved by technology

Therefore, simply using the method of optimizing the pumping method cannot effectively improve the uniformity of the pumping.
As shown in Figure 2, even if the angle pumping method or the edge pumping method is adopted, after the gain medium 7 with a single doping concentration absorbs the pump light from the pump source 8, there is still a large temperature difference inside

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  • Solid laser gain module using batten-shaped sectional doped gain medium
  • Solid laser gain module using batten-shaped sectional doped gain medium
  • Solid laser gain module using batten-shaped sectional doped gain medium

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Embodiment Construction

[0016] The gain medium proposed by the present invention is a slab-shaped segmentally doped solid-state laser gain module, including a pump source 8, a segmentally-doped slab-shaped gain medium 9, a cavity mirror 10 coated with a total reflection film, and a laser exit cavity Mirror 11. Such as image 3 As shown, taking the single-side pumping method as an example, the side 12 of the segmentally doped slab-shaped gain medium 9 is the pumping surface, and an anti-reflection coating is coated corresponding to the wavelength of the pump light; the pump source 8 is set on the segmentally doped The side of the complex slab-shaped gain medium 9, the main direction of the pump light is perpendicular to the pumping surface of the gain medium; the laser light 6 is reciprocally reflected between the cavity mirror 10 coated with a full reflection film and the laser exit cavity mirror 11 and is Enlarged, and finally emitted from the cavity mirror 11.

[0017] As shown in FIG. 4( a ), th...

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Abstract

The disclosed solid laser gain module with strip-form segment-doped medium is characteristics in: with lateral or edge pumping, increasing the doping concentration from pumping surface along light main direction, and arranging different length to segments. Compared with prior art, this invention reduces thermal stress of medium, eliminates thermal lens effect and thermal birefringence, and improves the gain module performance.

Description

technical field [0001] The invention relates to a solid-state laser gain module, in particular to a solid-state laser gain module with a slab-shaped segmented doped gain medium, which can be used in high-power solid-state lasers and solid-state laser amplifiers. Background technique [0002] When a high-power solid-state laser device is working, a large amount of pump light needs to be injected, and a large amount of heat will be generated after the pump light is absorbed by the gain medium. Inhomogeneous pumping will lead to uneven heat distribution in the gain medium, which will generate large thermal stress and be easily broken. Inhomogeneous pumping can also produce thermal lens effects and thermally induced birefringence effects, which will limit the output power and beam quality of solid-state laser devices, as well as the stability and reliability of work. [0003] Improving pumping uniformity can reduce thermal stress in the gain medium, eliminate thermal lens effec...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/06H01S3/00H01S3/091H01S3/16
Inventor 巩马理黄磊张海涛柳强殷聪
Owner TSINGHUA UNIV