Low-temperature Yb: yttrium aluminum garnet (YAG) regenerative amplifier

A regenerative amplifier and regenerative amplification technology, which is applied to lasers, phonon exciters, laser components, etc., can solve problems such as poor thermal conductivity and refrigeration systems, and achieve the effect of improving stability

Inactive Publication Date: 2011-09-28
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

[0003] The object of the present invention lies in the deficiency of above-mentioned prior art, provides a kind of low-temperature Yb:YAG regenerative amplifier, to solve the heat dissipation problem of regenerative amplifier working material poor thermal conductivity and refrigeration system, thereby realize higher repetition frequency, high stability, high Gain, amplification of pulsed signals with high beam quality

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  • Low-temperature Yb: yttrium aluminum garnet (YAG) regenerative amplifier
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  • Low-temperature Yb: yttrium aluminum garnet (YAG) regenerative amplifier

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the drawings. The description here is only for explaining the present invention more clearly, and should not be used to limit the protection scope of the present invention.

[0020] figure 1 It is a schematic diagram of the overall structure of the low-temperature Yb:YAG regenerative amplifier of the present invention. It can be seen from the figure that the composition of the low-temperature Yb:YAG regenerative amplifier of the present invention includes a pulse signal optical coupling system, an isolation system, an optical regeneration amplifier cavity, a switch system 10, a cryogenic vacuum system 13, and a pumping system 14. The specific structure is as follows:

[0021] Including the fiber laser 1, along the direction of the signal light output by the fiber laser 1, the first lens 2, the first polarizer 3, the first isolator 4, the second lens 5, the second polarizer 6, the second isolator Ref...

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Abstract

The invention relates to a low-temperature Yb: yttrium aluminum garnet (YAG) regenerative amplifier. The low-temperature Yb: YAG regenerative amplifier consists of six parts, namely a pulse signal optical coupling system, an isolation system, an optical regenerative amplifying cavity, an electro-optical switch system, a low-temperature vacuum system and a pumping system; a sheet Yb: YAG crystal is used as a gain medium; by adoption of a pumping manner that a semiconductor laser device is back to the end face, the pulse signal light achieves an amplified gain effect due to temperature-controllable refrigeration of liquid nitrogen on the Yb: YAG crystal; and the stability of the amplified output energy is improved. By the low-temperature Yb: YAG regenerative amplifier, amplification of a pulse signal with high repetition frequency, high stability, high gain and high optical quality is realized.

Description

Technical field [0001] The invention relates to a solid laser, in particular to a low-temperature ytterbium-doped yttrium aluminum garnet (hereinafter referred to as Yb:YAG) regenerative amplifier for laser pulse amplification. The signal laser pulse can obtain high stability, high gain, and maintain high beam quality amplification. Background technique [0002] Nowadays, high-energy lasers usually use Nd:glass as the gain medium, such as the NIF device in the United States and the SGII device in my country. Due to their poor thermal conductivity, the heat generated is difficult to be quickly taken away by the refrigerant, resulting in a low overall laser repetition frequency. With the continuous deepening of ICF research, high-energy lasers with higher repetition rates have gradually become a new research direction in various countries. Yb:YAG crystal has excellent thermal conductivity and is considered by many countries to replace Nd:glass as the working material of a new gene...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/16H01S3/042
Inventor 李响王江峰李学春卢兴华黄大杰于国浩
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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