A Cascaded Output 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: 2021-03-30
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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  • A Cascaded Output Fiber Raman Random Laser
  • A Cascaded Output Fiber Raman Random Laser
  • A Cascaded Output 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 cascaded output fiber Raman random laser, which comprises a semiconductor pump source module, a pump beam combiner, an ytterbium-doped fiber laser and a common single-mode fiber connected in sequence, and the signal end of the pump beam combiner is connected to There is a broadband reflector, and the end of the ordinary single-mode fiber is provided with an inclined end face of the fiber as the laser output port. The invention has a simple and compact structure, does not need high-cost special wavelength fiber gratings corresponding to the Stokes light wavelengths of each order, and the pumping beam combiner in the structure can withstand high power, so that the structure has the ability to generate high power The ability to cascade Raman fiber lasers solves the technical problem of limited cascade order and output power.

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 ...

Claims

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Application Information

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Patent Type & Authority Patents(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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