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High-power all-optical-fiber cascade amplifier

A cascaded amplifier and all-fiber technology, which is applied to lasers, laser components, phonon exciters, etc., can solve the problems of low brightness of high-power fiber lasers, achieve high power output capability, strong operability, and reduce heat dissipation effect of difficulty

Active Publication Date: 2017-07-25
CHINA WEAPON EQUIP RES INST +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to solve the problems existing in the technical background and the problem of low brightness of the current commercialized high-power fiber lasers. The cascaded amplified all-fiber laser has the advantages of high power output and high beam quality

Method used

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  • High-power all-optical-fiber cascade amplifier

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.

[0023] The invention discloses a high-power all-fiber cascade amplifier, which is characterized in that the high-brightness and high-power laser output of the ytterbium-doped fiber amplifier is realized by adopting the cascade pumping technology, which has the advantage of high beam quality and can realize a single-stage amplifier with a maximum of 10,000 watts. order of magnitude laser power output. Its structural diagram is as figure 1 As shown, its structural device includes a seed source 1 , an amplification stage 2 , and an output terminal 3 . The output terminal of the seed source 1 is con...

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Abstract

The invention relates to a high-power all-optical-fiber cascade amplifier, which comprises a seed source (1), an amplification stage (2) and an output terminal (3), wherein an output end of the seed source (1) is connected with an output end of the amplification stage (2), and an output end of the amplification stage (2) is connected with the output terminal (3). The invention provides a technical scheme with high operability for high-power and high-brightness laser output. Provided by the invention is a high-power cascade amplification system which has a high power output capacity and also has brightness maintenance; a simple MOPA structure is adopted, myriawatt high-brightness laser output can be achieved by only primary amplification; the amplification stage adopts a double-end pump structure, so that the heat dissipation difficulty is reduced; and commercial production is easy to realize.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to the field of high-power fiber laser technology. Background technique [0002] Fiber lasers are widely used in industrial processing, national defense and military fields, mainly due to their advantages of compact structure, high conversion efficiency, good heat dissipation, and better beam quality than traditional solid-state lasers. [0003] The progress of high-power fiber laser technology has also led to the progress of manufacturing technology, especially in 3D printing, shipbuilding, automobile manufacturing, aircraft manufacturing and other manufacturing industries involving large and complex mechanical structures. [0004] However, the current main pumping method for high-power fiber lasers is direct pumping by semiconductor lasers (LDs), which is limited by factors such as low brightness of LDs, large quantum deficits, thermal effects, and nonlinear effects. At present, s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/091H01S3/10
CPCH01S3/06758H01S3/091H01S3/10084
Inventor 孙伟谷亮董超张红王琦张凯
Owner CHINA WEAPON EQUIP RES INST
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