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Full-polarization-maintaining mode-locked fiber laser based on various soliton state output of chirped fiber Bragg grating

A Bragg grating, fiber laser technology, applied in lasers, phonon exciters, laser parts, etc., to achieve the effects of low cost, low cost, and large saturation flux

Inactive Publication Date: 2018-04-13
NORTHWEST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to the data retrieval conducted by the applicant, so far, there have been no reports on the flexible switching of multiple self-similar optical solitons with full polarization-maintaining fiber structure mode-locked Ytterbium-doped ultrashort pulse laser

Method used

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  • Full-polarization-maintaining mode-locked fiber laser based on various soliton state output of chirped fiber Bragg grating
  • Full-polarization-maintaining mode-locked fiber laser based on various soliton state output of chirped fiber Bragg grating
  • Full-polarization-maintaining mode-locked fiber laser based on various soliton state output of chirped fiber Bragg grating

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Embodiment Construction

[0032] see figure 1 , this embodiment provides a fully polarization-maintaining mode-locked fiber laser based on chirped fiber Bragg gratings outputting multiple soliton states. The polarization-maintaining gain fiber 4, the polarization-maintaining fiber coupler 5, the polarization-maintaining fiber focuser 6, the semiconductor saturable absorber 7 and the polarization-maintaining fiber constitute an all-fiber linear resonator; wherein, the wavelength division multiplexer 2 has an input port 2c, a first output port 2a and a second output port 2b;

[0033] The pigtail of the pump source 1 is connected to the input port 2c of the wavelength division multiplexer 2, and the second output port 2b of the wavelength division multiplexer 2 passes through the Yb-doped polarization-maintaining gain fiber 4 and the 2×2 fiber coupler 5 in turn. , a polarization-maintaining fiber focuser 6, and finally focused on a semiconductor saturable absorber 7; the two output ports (5c, 5d) of the ...

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Abstract

The present invention relates to a full-polarization-maintaining mode-locked fiber laser based on various soliton state output of a chirped fiber Bragg grating. The full-polarization-maintaining mode-locked fiber laser comprises a pumping source and an all-fiber linear laser resonator composed of a wavelength division multiplexer, the chirped fiber Bragg grating, a fiber coupler, a focalizer, a semiconductor saturable absorber, a Yb-doped gain fiber and a PM 980 polarization-maintaining fiber. The pumping source is connected with the pumping end of the 980 / 1030 nm wavelength division multiplexer, one port of the wavelength division multiplexer is used as an output end, and the other output end is finally focused on the semiconductor saturable absorber orderly via the chirped fiber Bragg grating, the Yb doped gain fiber, the fiber coupler and the focalizer. The full-polarization-maintaining mode-locked fiber laser of the present invention is simple in structure, very small in size, lower in cost and high in mode-locked stability, can realize the self-starting, has the output pulse reaching hundreds of femtoseconds, can be widely applied to the material modulation characteristic measurement, a fiber optical frequency comb and a fiber amplification system, and has the better application prospect and business value.

Description

technical field [0001] The invention belongs to the technical field of lasers, and in particular relates to a fully polarization-maintaining mode-locked fiber laser based on a chirped fiber Bragg grating outputting multiple soliton states. A fiber laser realized by Yb-doped polarization-maintaining fiber, which can stably output single pulse, discrete soliton and bound state soliton by changing the pump power. Background technique [0002] In 1986, American scientists Fork and others obtained laser pulses with a pulse width of less than 100 fs by means of collision mode locking in dye lasers, marking the advent of the femtosecond laser era. Femtosecond lasers have the dual characteristics of "ultra-short" and "ultra-stable", and have a wide range of applications in high-field laser physics, ultra-fast chemical dynamics, microstructure material science and life science. As one of the important members of fiber lasers, femtosecond fiber lasers not only have the main advantage...

Claims

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Application Information

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IPC IPC(8): H01S3/00H01S3/067H01S3/10H01S3/102H01S3/098
CPCH01S3/0057H01S3/06712H01S3/06716H01S3/06725H01S3/10084H01S3/1024H01S3/1106
Inventor 侯磊白晋涛孙江郭鸿宇陆宝乐
Owner NORTHWEST UNIV
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