Q-modulated 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: 2016-08-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
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  • 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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  • Q-modulated multi-frequency mode-locked fiber random laser
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  • Q-modulated 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-modulated multi-frequency mode-locked fiber random laser comprising a fiber totally-reflective mirror 1, a saturable absorber 2, a coupler 3, a polarization controller 4, a pump light source 5, a wavelength division multiplexer 6, and an active fiber 7. A stochastic feedback and photon local effect introduced by a random resonant cavity structure enables laser output to be in multiple possible modes. In addition, multiple high-order harmonic sub pulses can be produced while a linear cavity resonates to produce low-frequency mode-locked pulse, namely, pulses of multiple frequencies can be acquired in a very wide frequency range. The repetition frequencies of pulse include both high frequency and low frequency. However, the pulse repetition frequency of the traditional typical mode-locked laser corresponds to a determined cavity length, there is a single pulse frequency, 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 Applications(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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