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High-power fiber laser

A fiber laser, high-power technology, used in lasers, laser parts, phonon exciters, etc., can solve the problem of reducing signal laser power and conversion efficiency, affecting the stability and reliability of high-power fiber lasers, and damage to optical devices, etc. problems, to achieve the effect of suppressing nonlinear effects, reducing the number of fiber splices, and increasing power

Pending Publication Date: 2021-04-02
GW (SHANGHAI) LASER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The waveguide structure of the fiber makes the laser energy confined in the micron-scale fiber core. With the continuous increase of the fiber laser power, a very high power will be formed in the fiber core. When the power exceeds the threshold, the photons interact with the medium. Non-linear effects are caused, and part of the laser light is converted into long-wavelength Stokes light, which not only reduces the power and conversion efficiency of the signal laser, but also causes damage to the optical devices in the system due to the Stokes light transmitted backwards, seriously Affects the Stability and Reliability of High Power Fiber Lasers

Method used

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Embodiment 1

[0033] see figure 1 , shown in the figure is a high-power fiber laser, which adopts a bidirectional pumping method, which includes an integrated optical fiber device module 100, an indicator light laser module 200, a semiconductor laser module 300, a gain fiber 400, an integrated optical fiber device module 500, and a semiconductor laser module. Laser module 600 and output optical cable 700.

[0034] The integrated optical fiber device module 100 has several laser beam input ports and a laser beam output port. The laser beam output end of the indicator light laser module 200 is correspondingly connected to the laser beam input end of the integrated optical fiber device module 100 . Each laser beam output port of the semiconductor laser module 300 is correspondingly connected to the laser beam input port of the integrated optical fiber device module 100 . The semiconductor laser module 300 is composed of several semiconductor lasers 310 . The input end of the gain fiber 400 ...

Embodiment 2

[0041] see figure 2 , shown in the figure is a high-power fiber laser, which adopts a unidirectional pumping method, which includes an integrated optical fiber device module 100a, an indicating light laser module 200a, a semiconductor laser module 300a, a gain fiber 400a, an integrated optical fiber device module 500a and Output fiber optic cable 600a.

[0042] The integrated optical fiber device module 100a has several laser beam input ports and a laser beam output port. The laser beam output end of the indicator light laser module 200a is correspondingly connected to the laser beam input end of the integrated optical fiber device module 100a. Each laser beam output port of the semiconductor laser module 300a is correspondingly connected to the laser beam input port of the integrated optical fiber device module 100a. The semiconductor laser module 300a is composed of several semiconductor lasers 310a. The input end of the gain fiber 400a is connected to the output end of ...

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Abstract

The invention discloses a high-power optical fiber laser. The laser comprises a first integrated optical fiber device module and a second integrated optical fiber device module, an indicating light laser module, the laser beam output end of the indicating light laser module is correspondingly connected with the laser beam input end of the first integrated optical fiber device module; a first semiconductor laser module, each laser beam output end of the first semiconductor laser module is correspondingly connected with the laser beam input end of the first integrated optical fiber device module; a gain optical fiber, the input end of the gain optical fiber is connected with the laser beam output end of the first integrated optical fiber device module; a second integrated optical fiber device module, wherein one laser beam input end of the second integrated optical fiber device module is connected with the output end of the gain optical fiber; and an output optical cable, an input end ofthe output optical cable is connected with the laser beam output end of the second integrated optical fiber device module. The laser is advantaged in that the power is improved, the process is simplified, and reliability is improved.

Description

technical field [0001] The invention relates to the technical field of fiber lasers, in particular to a high-power fiber laser. Background technique [0002] High-power fiber lasers are widely used in industrial processing, military defense, scientific research and other fields because of their good beam quality, high output power, good stability, compact structure, and convenient thermal management. [0003] At present, the main factor limiting the further improvement of the output power of single-cavity single-mode fiber lasers is the nonlinear effect, among which the stimulated Raman scattering effect (SRS) is the most important nonlinear effect in high-power fiber lasers. The waveguide structure of the fiber makes the laser energy confined in the micron-scale fiber core. With the continuous increase of the fiber laser power, a very high power will be formed in the fiber core. When the power exceeds the threshold, the photons interact with the medium. Non-linear effects ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/08H01S3/00
CPCH01S3/0092H01S3/06708H01S3/06754H01S3/08013
Inventor 张先明顾秀颖丁建武刘进辉
Owner GW (SHANGHAI) LASER TECH CO LTD
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