All-fiber gas raman laser device used for generating two-micrometer lasers

A Raman laser and all-fiber technology, which is applied in lasers, laser components, phonon exciters, etc., can solve the problems of low pump coupling efficiency and high pumping threshold power of single-pass hollow fiber gas lasers, and achieve high dynamic rates output effect

Active Publication Date: 2016-02-17
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0006] The object of the present invention is to provide an all-fiber gas Raman laser for generating 2 μm laser, which solves the problems of low pumping coupling efficiency of space-structured fiber gas Raman laser and high pumping threshold power of single-pass hollow-core fiber gas laser question

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  • All-fiber gas raman laser device used for generating two-micrometer lasers
  • All-fiber gas raman laser device used for generating two-micrometer lasers

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[0020] The accompanying drawings constituting a part of this application are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention.

[0021] At present, the lasers that can achieve high-power continuous laser output in the 2 μm band are mainly rare earth-doped solid fiber lasers. When this laser works at high power, its linewidth will be greatly broadened due to the nonlinear effect in the solid fiber. However, in the laser provided by the present invention, the line width of the signal laser in the 2 μm band is at the same level as that of the pump laser in the 1 μm band, and the problem of line width broadening under high power conditions does not occur.

[0022] In addition, the limit power of solid fiber lasers is mainly limited by nonlinear effects and fiber material damage; theore...

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Abstract

The invention provides an all-fiber gas raman laser device used for generating two-micrometer continuous lasers. According to the laser device, the tunable two-micrometer continuous lasers can be output through the stimulated raman scattering effect to which one-micrometer wave-band continuous pump light and H<2> gas which is arranged in hollow photonic crystal fibers in a filling mode are subjected.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to an all-fiber gas Raman laser for generating 2 μm laser light. Background technique [0002] The 2μm band laser is in the weak absorption band of the atmosphere and has the characteristics of human eye safety. It is widely used in free space optical communication, remote sensing, lidar, medical and military fields. In addition, using it as a pump source can also realize the output of 3-5 μm wavelength laser, which is widely used in the field of scientific research. [0003] At present, lasers that can achieve 2 μm wavelength laser output mainly include traditional solid-state lasers, semiconductor lasers, quantum cascade lasers, and rare earth-doped fiber lasers. Among them, the gain bandwidth of the solid-state laser is relatively high, and the output of 2-5 μm laser can be realized. Although its efficiency is sufficient for commercial use, the thermal lens effect of the solid-st...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/30H01S3/091H01S3/1055G02B6/255
Inventor 王泽锋顾博陈育斌陈子伦许晓军司磊
Owner NAT UNIV OF DEFENSE TECH
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