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A Q-switched multi-frequency mode-locked fiber random laser

A random laser and random laser technology, applied in the field of lasers, can solve the problems of narrow adjustable range and single pulse frequency, and achieve the effect of narrow adjustable range

Active Publication Date: 2018-11-27
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention overcomes the deficiencies of the prior art, and provides a Q-switched multi-frequency mode-locked fiber random laser, which solves the problem that the cavity length corresponding to the pulse repetition frequency of the previous Q-switched mode-locked laser is determined, and the pulse frequency is single and the adjustable range is narrow. technical problems

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  • A Q-switched multi-frequency mode-locked fiber random laser
  • A Q-switched multi-frequency mode-locked fiber random laser
  • A Q-switched multi-frequency mode-locked fiber random laser

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings. Embodiments of the present invention include, but are not limited to, the following examples.

[0031] Such as figure 1 The Q-switched multi-frequency mode-locked fiber random laser shown, the Q-switched multi-frequency mode-locked fiber random laser includes:

[0032] A pumping light source 5, used to generate pumping light waves;

[0033] The fiber optic total reflection mirror 1 is used to provide total reflection to the fiber optic random laser, and has an optical fiber output end a, and the fiber optic total reflection mirror 1 is located at one end of the fiber optic random laser;

[0034] The coupler 3 is used to separate part of the light wave as an output, and has an optical fiber connector d, an optical fiber connector e and an optical fiber connector f, and the optical fiber connector e is used as a laser output port 9 of a fiber random laser to output rando...

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Abstract

The invention discloses a Q-switched multi-frequency mode-locked fiber random laser. The Q-switched multi-frequency mode-locked fiber random laser includes a fiber optic total reflection mirror 1, a saturable absorber 2, a coupler 3, a polarization controller 4, a pump A light source 5 , a wavelength division multiplexer 6 and an active optical fiber 7 . The random feedback and photon localization effect introduced by the random resonant cavity structure of the present invention make the laser output have multiple modes possible. In addition, multiple high-order harmonic sub-pulses can be generated while the linear cavity resonates to generate low-frequency mode-locked pulses, namely Multiple frequency pulses can be obtained in a wide frequency range, and the pulse repetition frequency has both high frequency and low frequency, while the pulse repetition frequency of traditional typical Q-switched mode-locked lasers corresponds to a certain cavity length, and the pulse frequency is single and The adjustable range is narrow.

Description

technical field [0001] The invention relates to a laser, which belongs to the fields of Q-switched mode-locked fiber lasers and fiber random lasers, and more specifically relates to a Q-switched multi-frequency mode-locked fiber random laser. Background technique [0002] As an important new light source, fiber random laser can be used in the fields of nonlinear optics, optical communication and sensing. Fiber random lasers based on coherent feedback have been widely studied due to their advantages such as low lasing threshold, short fiber length, and controllable random modes. Coherent feedback fiber random lasers usually use distributed or phase-shifted Bragg gratings in doped fibers to form a random resonant cavity. When the photon localization length is less than the length of the random structure, the photon localization condition is satisfied, so that the photon is localized in the cavity. Coherent light amplification is generated inside, and random laser light with p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/067H01S3/098H01S3/11
CPCH01S3/06708H01S3/0675H01S3/1112H01S3/1115
Inventor 张伟利马瑞曾雄饶云江
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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