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Sheet-shaped laser amplifier for inhibiting amplified spontaneous emission

A technology for amplifying spontaneous emission and flake laser, which can be applied to lasers, laser parts, phonon exciters, etc. It can solve the problems of reducing pump coupling efficiency, serious ASE effect, damage to optical components, etc., so as to suppress amplified spontaneous emission. , The effect of uniform thermal deposition and simplified process

Inactive Publication Date: 2016-03-02
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Claims
  • Application Information

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Problems solved by technology

However, as the aperture increases, the gain-length product g 0 l will also increase accordingly, which will lead to a more severe ASE effect
In addition, increasing the overall thickness of the gain medium will lead to serious nonlinear effects, reduce beam quality, and even damage optical components. At the same time, higher requirements are placed on the diode array, which may reduce the pump coupling efficiency.

Method used

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  • Sheet-shaped laser amplifier for inhibiting amplified spontaneous emission
  • Sheet-shaped laser amplifier for inhibiting amplified spontaneous emission
  • Sheet-shaped laser amplifier for inhibiting amplified spontaneous emission

Examples

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Embodiment 1

[0026] Such as figure 1 with figure 2 As shown, a sheet laser amplifier for suppressing amplified spontaneous radiation includes a gain medium 1, a coupling lens group 5, an area diode pump source 4, a dichroic mirror 6, a cooling heat sink 7, a cooling heat sink 8 and a seed light source ( (Not shown in the figure), since the seed light source and the cooling heat sink are common technologies or components in the laser amplifier, they will not be described in detail here. The gain medium 1 is at least two pieces, the gain medium 1 is located in the same plane, a spacer layer 2 is fixed between the gain medium 1, and the material of the spacer layer 2 is different from that of the gain medium 1. 1 is a doped laser material, the spacer layer 2 is also a doped laser material, the spacer layer 2 has the same matrix as the gain medium 1, but has different doping elements, the gain medium 1 and the outer side of the spacer layer 2 An encapsulation 3 is provided. The encapsulation 3...

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Abstract

The invention discloses a sheet-shaped laser amplifier for inhibiting amplified spontaneous emission. The sheet-shaped laser amplifier comprises at least two gain media, the gain media are disposed in the same plane, a spacing layer is fixed between the gain media, and the material of the spacing layer is different from that of the gain media. The laser amplifier effectively inhibits influences exerted by amplified spontaneous emission in high-gain large-dimension sheet-shaped gain media on efficiency, enables the gain capability in the media to reach a theoretical level and satisfies the demand of a high-energy high-power laser for scaling amplification and operation.

Description

Technical field [0001] The present invention relates to the technical field of high-repetition rate, high-energy and high-power laser amplifiers, and in particular to a sheet-shaped laser amplifier capable of suppressing amplified spontaneous radiation. Background technique [0002] The energy crisis is a common challenge facing human development. Inertial Fusion Energy (IFE) is recognized as a safe, carbon-free, and sustainable clean energy. Driven by the demand for laser fusion, various countries have built a series of large-scale high-power laser driver devices, such as the National Ignition Device (NIF) in the United States, the Megajoule Device (LMJ) in France, and the Shenguang Series Device (SG) in my country. . However, these devices are mainly based on the traditional xenon lamp-pumped sheet neodymium glass, with extremely low energy conversion efficiency (about 0.5%), and are basically single-shot operation, which cannot meet IFE's demand for high-efficiency repetitive ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/16H01S3/10H01S3/0941
Inventor 肖凯博郑万国郑建刚蒋新颖严雄伟王振国李敏张君田晓琳张雄军李明中袁晓东粟敬钦胡东霞朱启华
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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