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Cascaded pumping all-optical fiber cable polarization mode-locked laser device based on nonlinear optical loop mirror

A technology of nonlinear optics and mode-locked lasers, which is applied in the field of laser technology and nonlinear optics, can solve the problems of high cost and limited working life, and achieve the effects of reducing volume, reducing heat load, improving stability and working life

Pending Publication Date: 2018-03-27
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problems of high cost and limited working life of traditional mode-locking technology, obtain a stable, efficient and long-term working all-fiber pulsed laser source, avoid space components such as solid saturable absorbers for pulse generation, and protect the pump source from being damaged damage

Method used

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  • Cascaded pumping all-optical fiber cable polarization mode-locked laser device based on nonlinear optical loop mirror
  • Cascaded pumping all-optical fiber cable polarization mode-locked laser device based on nonlinear optical loop mirror

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Embodiment 1

[0034] Such as figure 1 As shown: the embodiment of the present invention provides a cascaded pumped all-fiber linearly polarized mode-locked laser based on a nonlinear optical loop mirror, including: 1 in the figure is a pump source, and a semiconductor with a center wavelength of 976 nm can be selected. Laser diodes, 2 and 8 are the first and second polarization-maintaining beam combiners or the first and second polarization-maintaining wavelength division multiplexers, which can be selected as (2+1)x1 or (6+1)x1 beam combiners, wave Demultiplexer, such as type 8 / 125 or type 6 / 125; 3 is the first double-clad polarization-maintaining gain fiber, which can be selected from the high-performance double-clad polarization-maintaining ytterbium-doped fiber produced by nlight, such as Yb1200-6 / 125DC-PM type; 4 and 5 are the first and second polarization-maintaining reflective fiber Bragg gratings, high inversion gratings are optional; 6 and 13 are the first and second polarization-...

Embodiment 2

[0042] Such as figure 2 As shown: the embodiment of the present invention provides a cascaded pumped all-fiber linearly polarized mode-locked laser based on a nonlinear optical loop mirror, including: 1 in the figure is a pump source, and a semiconductor with a center wavelength of 976 nm can be selected. Laser diodes, 2 and 8 are the first and second polarization-maintaining beam combiners and polarization-maintaining wavelength division multiplexers, which can be selected as (2+1)x1 or (6+1)x1 beam combiners and wavelength division multiplexers , such as 8 / 125 or 6 / 125; 3 is the first double-clad polarization-maintaining gain fiber, which can be selected from the high-performance double-clad polarization-maintaining ytterbium-doped fiber produced by nlight, such as Yb1200-6 / 125DC-PM ; 40 is the first polarization maintaining circulator; 5 is the second polarization maintaining reflective fiber Bragg grating, optional high inversion grating; 6, 13 are the first and second po...

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Abstract

The invention discloses a cascaded pumping all-optical fiber cable polarization mode-locked laser device, which comprises a cascaded pumping system, a main oscillator loop and a nonlinear optical loopmirror system. By adopting the cascaded pumping all-optical fiber cable polarization mode-locked laser device, mode-locked pulse output is realized without using a space component, and the cascaded pumping all-optical fiber cable polarization mode-locked laser device has the advantages of simple design, compact structure, high stability and high efficiency.

Description

technical field [0001] The invention belongs to the field of laser technology and nonlinear optics, in particular to a cascaded pumped all-fiber linear polarization mode-locked laser based on a nonlinear optical ring mirror. Background technique [0002] In the past few decades, mode-locked lasers emitting ultrashort pulses have played an important role in more and more fields, covering such as laser processing, communication sensing, detection and diagnosis, biomedicine, atmospheric monitoring, radar, Optical frequency comb and many other fields. Fiber lasers have the advantages of small size, light weight, high conversion efficiency, and good output beam quality, and have attracted widespread attention. [0003] In the study of fiber pulsed lasers, mode locking is an important method to generate ultrashort pulses. The general approach is to add solid saturable absorbers in the laser to achieve picosecond and femtosecond pulse output, such as two-dimensional materials suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/094H01S3/08
CPCH01S3/067H01S3/08013H01S3/094003H01S3/094042
Inventor 王璞石宇航
Owner BEIJING UNIV OF TECH
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