Cascade output optical fiber Raman random laser

A technology of random lasers and output fibers, which is applied to lasers, laser components, phonon exciters, etc., can solve the problems of high cost, high cost of wavelength division multiplexers, and low power of wavelength division multiplexers. Achieve the effect of simple and compact structure and solve complex structure

Active Publication Date: 2017-01-04
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

However, the preparation of special-wavelength fiber gratings is complicated and costly; the bearable power of the wavelength division multiplexer is low, which limits the cascade order and output power of the Raman random laser, and the wavelength division multiplexing with high withstand power device is expensive

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  • Cascade output optical fiber Raman random laser
  • Cascade output optical fiber Raman random laser
  • Cascade output optical fiber Raman random laser

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Embodiment Construction

[0017] All the features disclosed in this specification, except mutually exclusive features and / or steps, can be combined in any way.

[0018] Combine below Figure 1 ~ Figure 3 The present invention will be described in detail.

[0019] A cascaded output fiber Raman random laser, comprising: semiconductor pump source module 1, pump beam combiner 2, ytterbium-doped double-clad fiber 3, common single-mode fiber 4, high reflectivity fiber grating 5, low reflection High-efficiency fiber grating 6, broadband reflector 7, and optical fiber inclined end face 8, the semiconductor pump source module 1 is connected to the pump end of the pump beam combiner 2, pumping ytterbium-doped double-clad fiber 3; high reflectivity fiber grating 5 , ytterbium-doped double-clad fiber 3 and low-reflectivity fiber grating 6 constitute the ytterbium-doped fiber laser in turn, and output the ytterbium-doped fiber laser. Specifically, the ytterbium-doped double-clad fiber 3 is connected to the pumping...

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Abstract

The invention discloses a cascade output optical fiber Raman random laser, comprising a semiconductor pumping source module, a pumping beam combiner, a ytterbium-doped optical fiber laser and a common mono-mode optical fiber which are connected sequentially, wherein a signal port of the pumping beam combiner is connected with a broadband reflective mirror, and the tail end of the common mono-mode optical fiber is provided with an optical fiber angled end face serving as a laser output port. The cascade output optical fiber Raman random laser disclosed by the invention is simple and compact in structure, and does not need high-cost special-wavelength optical fiber gratings corresponding to various orders of Stokes optical wavelengths, and the pumping beam combiner in the structure can bear very high power, so that the structure has an ability of generating high-power cascade Raman optical fiber laser, and the technical problem that the cascading order and the output power are limited is solved.

Description

technical field [0001] The invention belongs to the field of fiber lasers, in particular to a fiber Raman random laser. Background technique [0002] Fiber random laser is a new type of cavityless fiber laser, which is different from traditional lasers in structure, and its feedback comes from randomly distributed back Rayleigh scattering in the fiber. The fiber Raman random laser uses the stimulated Raman scattering effect in the fiber to provide gain. Compared with the doped fiber laser, the output laser wavelength can be selected in a wide range, and the special wavelength can be obtained through the selection of the pump wavelength and the cascaded Raman effect. It is an important new light source with high laser output and high power output capability. [0003] The fiber Raman random laser with semi-open cavity structure can reduce the threshold of cascaded output, and can use short cavity to achieve high power output. In the prior art, ytterbium-doped fiber laser is ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/30
CPCH01S3/06716H01S3/302
Inventor 王子南吴函饶云江
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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