A high-efficiency tunable wavelength doubling system based on random fiber laser

A fiber laser and frequency doubling system technology, applied in the field of lasers, can solve the problem of increasing the frequency doubling efficiency without the statistical characteristics of the time-domain intensity of the random laser of the fiber, and achieve the effect of improving the frequency doubling efficiency.

Active Publication Date: 2021-12-28
SICHUAN UNIV
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Problems solved by technology

The fiber random laser frequency doubling system reported so far has not realized the improvement of the frequency doubling efficiency by adjusting the time-domain intensity statistical characteristics of the fiber random laser.

Method used

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  • A high-efficiency tunable wavelength doubling system based on random fiber laser
  • A high-efficiency tunable wavelength doubling system based on random fiber laser
  • A high-efficiency tunable wavelength doubling system based on random fiber laser

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0032] Such as figure 1 As shown, a high-efficiency tunable wavelength frequency doubling system based on random fiber lasers, including random fiber laser modules 1, narrowband tunable filters 20, first amplifying modules 2, second amplifying modules 5 and frequency doubling module;

[0033] The random fiber laser module 1 is used to output ytterbium-doped random laser with tunable wavelength, including a feedback module connected in sequence for generating selectable wavelength point feedback, a first pump beam combiner 17, a first ytterbium-doped fiber 18, a single mode fiber 19; the first pumping beam combiner 17 is connected to the first pumping light source 16; the feedback module includes a 1:1 optical coupler 15 connected in sequence, and the tunable filter 14 is integrated in the 1:1 optical coupler 15-based In the fiber ring mirror;...

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Abstract

The invention discloses a high-efficiency tunable wavelength frequency doubling system based on a random fiber laser, which includes a random fiber laser module, a narrowband tunable filter, a first amplification module, a second amplification module and a frequency doubling module connected in sequence; The fiber laser module is used to output ytterbium-doped random laser with tunable wavelength. The invention utilizes a tunable filter to construct point feedback to realize a wavelength-tunable ytterbium-doped random laser, realizes phase matching by adjusting the PPLN temperature, and outputs a wavelength-tunable frequency-doubled visible light random laser; a narrow-band tunable laser is set in front of the first amplification module Filter, the central wavelength of the narrow-band tunable filter has a certain offset from the central wavelength of the ytterbium-doped random laser, so as to filter out the spectral edge components of the ytterbium-doped random laser, and realize the regulation of the time-domain intensity statistical characteristics of the fundamental frequency light. Further improve frequency doubling efficiency.

Description

technical field [0001] The invention relates to the field of lasers, in particular to a high-efficiency tunable wavelength frequency doubling system based on a random fiber laser. Background technique [0002] As a new type of laser, fiber random laser has been widely concerned and researched due to its unique physical properties and wide potential applications. Compared with traditional lasers, this cavity-less fiber random laser has a simpler structure, higher conversion efficiency, better stability, higher reliability and lower noise. Taking advantage of these properties and advantages, fiber random lasers have a wide range of potential applications in fiber optic communication, sensing, imaging, and mid-infrared laser pumping sources. [0003] Although fiber random lasers have attracted much attention due to their unique properties, the wavelength of fiber random lasers based on silica fibers is limited to the near-infrared region. In order to generate visible random l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/067H01S3/10H01S3/109
CPCH01S3/06758H01S3/10053H01S3/109
Inventor 吴函刘洪宇梁厚昆
Owner SICHUAN UNIV
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