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External cavity feedback type all-fiber structure cavity emptying laser

An external cavity feedback and all-fiber technology, applied in the field of data lasers, achieves the effects of easy selection, high damage resistance threshold, and line width optimization

Pending Publication Date: 2022-03-29
湖北久之洋信息科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] How to empty the cavity technology, feedback external cavity, fiber laser, doped MgO:LiNO 3 Crystals fused in one laser, yet unreported

Method used

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  • External cavity feedback type all-fiber structure cavity emptying laser

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Embodiment Construction

[0037] 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 and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0038] see figure 1 , an external cavity feedback all-fiber structure cavity-dumping laser, which includes a pump laser 101, a polarization-maintaining wavelength division multiplexer 102, a polarization-maintaining gain fiber 103, a first fiber grating 104, and a polarization beam splitter 109,1 / 4 wave plate 108 , polarization modulator 107 , second fiber Bragg grating 106 , and third fiber Bragg grating 105 .

[0039] The pump laser 101 is fused with the 2-port of the polarization-maintaining wavelength division multiplexer 102, and the pump laser is coupled into the 3-port, and the 3-port of t...

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Abstract

The invention discloses an external cavity feedback type all-fiber structure cavity emptying laser, which comprises a pump laser, the pump laser is connected with a second port of a polarization-maintaining wavelength division multiplexer, and a third port of the polarization-maintaining wavelength division multiplexer, a polarization-maintaining gain fiber and a first fiber grating are connected in sequence; a port 1 of the polarization-maintaining wavelength division multiplexer, the polarization beam splitter, the 1 / 4 wave plate, the polarization modulator, the second fiber bragg grating and the third fiber bragg grating are connected in sequence; a MgO: LiNO3 crystal is packaged in the polarization modulator; the first fiber bragg grating and the second fiber bragg grating form a resonant cavity, and the first fiber bragg grating and the third fiber bragg grating form a feedback outer cavity. The cavity emptying technology, the feedback type outer cavity, the optical fiber laser and the MgO: LiNO3 doped crystal are fused together, laser pulse output is achieved based on polarization control adjustment, and the laser has the advantages of being compact in structure, high in reliability, high in polarization extinction ratio and good in light beam quality.

Description

technical field [0001] The invention belongs to the technical field of data lasers, and in particular relates to an external cavity feedback all-fiber structure cavity emptying laser. Background technique [0002] Existing solid-state lasers have defects such as large volume, poor reliability, low polarization extinction ratio, and poor beam quality. [0003] The cavity emptying technology based on resonant cavity photonic energy storage has great advantages in realizing pulsed laser output with stable amplitude, high energy and high repetition rate. The use of cavity emptying technology to achieve high-energy, high-repetition-frequency pulse output has been widely reported in the field of solid-state lasers, but few reports have been reported in fiber lasers. The feedback external cavity can effectively optimize the laser output spectrum and line width characteristics. The introduction of external cavity feedback can reduce the phase noise of the signal and realize the nar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/10H01S3/094
CPCH01S3/0675H01S3/10061H01S3/094042
Inventor 余龙洪普刘恒彭堂超王寿增熊慧
Owner 湖北久之洋信息科技有限公司
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