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High-power column vector optical fiber laser

A technology of fiber lasers and column vectors, which is applied to lasers, laser parts, cladding fibers, etc., can solve the problems of poor stability and low output power, and achieve the effects of reduced coupling, simple and compact structure, and strong practicability

Inactive Publication Date: 2019-05-10
安徽天琢激光科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the defects of poor stability and low output power of existing column vector fiber lasers, and to design a high-power single column vector fiber laser that outputs high-power and high-stability column vector lasers

Method used

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  • High-power column vector optical fiber laser
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  • High-power column vector optical fiber laser

Examples

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Embodiment 1

[0049] refer to figure 1 , is an application example of the present invention—high-power columnar vector CW fiber laser, the fiber laser 1 of single columnar vector mode output is the CW fiber laser of linear cavity single columnar vector mode output, refer to Figure 7 . In this laser, the pump source 201 adopts a semiconductor laser with a center wavelength of 975nm, and is connected to the pump end of the wavelength division multiplexer 202 through pigtail fusion, and the wavelength division multiplexer 202 adopts a 975nm / 1064nm wavelength division multiplexer. It is connected to the pigtail fiber of the input grating 203 by pigtail fusion. The input grating 203 adopts the grating engraved on the ring-core optical fiber, and its reflectivity to the LP11 mode of the 1064nm waveband is close to 100%, while for the pump light of the 975nm waveband completely transparent, and then connected to the gain fiber 204 by fusion splicing.

[0050] Ring core fiber structure reference...

Embodiment 2

[0058] refer to figure 2 , is an application example of the present invention—high-power columnar vector pulsed fiber laser, and the fiber laser 1 with single columnar vector mode output is a pulsed fiber laser with linear cavity single columnar vector mode output, refer to Figure 8 , in this laser, the pump source 301 adopts a semiconductor laser with a center wavelength of 975nm, the wavelength division multiplexer 302 adopts a 975nm / 1064nm wavelength division multiplexer, and the pigtail of the pump source 301 is welded with the wavelength division multiplexer The pump end of device 302 is connected. The input grating 303 adopts the grating engraved on the ring-core optical fiber, and its reflectivity for the LP11 mode in the 1064nm band is close to 100%, while it completely transmits the pump light in the 975nm band.

[0059] Ring core fiber structure reference Figure 5 , the guided mode layer 16 is a ring-shaped distribution of germanium-doped silicon dioxide, and th...

Embodiment 3

[0069] refer to figure 2 , is an application example of the present invention—a high-power column vector pulsed fiber laser, and the fiber laser 1 with single column vector mode output is a pulsed fiber laser with ring cavity single column vector mode output. In this laser, the pump source 401 is a semiconductor laser with a center wavelength of 975nm, and the wavelength division mode division multiplexer 402 is made of HI1060 optical fiber and ring-core optical fiber fusion taper, which can realize multiplexing of 980nm / 1064nm wavelength, And the LP01 mode with a center wavelength of 980nm in the HI1060 fiber is coupled to the TE01 mode in the ring-core fiber. The pigtail of the pump source 401 is welded to the pigtail of the pump end of the wavelength division mode multiplexer 402 .

[0070] Ring core fiber structure reference Figure 5 , the guided mode layer 16 is a ring-shaped distribution of germanium-doped silicon dioxide, and the low-refractive index layer 17 in the...

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Abstract

The invention discloses a high-power column vector optical fiber laser. The laser comprises an optical fiber laser in single column vector mode output, a primary amplifier, a two-stage amplifier, a three-stage amplifier, and an output component; the optical fiber used by the laser is a double-clad large mode field annular core optical fiber, the fiber core is a multilayer structure with crossly distributed high-refractivity layers and low-refractivity layers. The structure increases the effective refractivity difference between vector modes of an LP11mode, and effectively reduces the mutual coupling between the TE01 mode and other modes, thereby enabling the TE01 mode to be stably existent in the laser. The optical fiber laser in single column vector mode output is the continuous optical fiber laser or pulse optical fiber laser in the single column vector mode output, the high-power and high-stable column vector beam output can be realized through three-stage amplification. The opticalfiber laser disclosed by the invention can be applied to the laser precision processing, the particle acceleration and surface plasma motivation and like fields.

Description

technical field [0001] The invention relates to the technical field of fiber lasers, and specifically discloses a high-power column vector fiber laser. Background technique [0002] Cylindrical vector beams are widely used in many fields due to their unique annular electric field distribution and axisymmetric polarization properties. In terms of surface plasmon excitation, when radially polarized light is incident on a metal surface, any longitudinal section of it is P-polarized to the material surface, which can form a strongly focused surface plasmon excitation through surface structure enhancement and form an enhanced local field. In terms of particle manipulation, because of the existence of particle surface scattering, it is very difficult to complete the three-dimensional manipulation of magnetic particles through laser beams, and the angularly polarized beam is a hollow ring-shaped spot after focusing and only has angular polarization components, which can realize S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/098G02B6/02G02B6/255
Inventor 张一民
Owner 安徽天琢激光科技有限公司
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