Method for accurately adjusting and stabilizing repetition frequency of mode-locked fiber laser

A fiber laser and repetition frequency technology, applied in the laser field, can solve the problems of low efficiency, limited application objects, and complicated repetition frequency adjustment methods, so as to achieve the effect of improving efficiency and reducing difficulty.

Active Publication Date: 2021-07-27
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the problems of complex repetition rate adjustment methods in the prior art, low efficiency, and limited application objects, thereby providing a method for accurately adjusting and stabilizing the repetition rate of a mode-locked fiber laser

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  • Method for accurately adjusting and stabilizing repetition frequency of mode-locked fiber laser
  • Method for accurately adjusting and stabilizing repetition frequency of mode-locked fiber laser
  • Method for accurately adjusting and stabilizing repetition frequency of mode-locked fiber laser

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Embodiment Construction

[0025] Embodiments of the present invention provide a method for accurately adjusting and stabilizing the repetition frequency of a mode-locked fiber laser, please refer to figure 1 , including the following steps:

[0026] S1: The first step: build and start a mode-locked fiber laser, the resonator of the mode-locked fiber laser has an optical fiber;

[0027] S2: second step: detecting the repetition frequency of the laser pulse output by the mode-locked fiber laser, and judging whether the difference between the detected repetition frequency and the target repetition frequency is within the first preset threshold range;

[0028] S3: The third step: if the difference between the detected repetition frequency and the target repetition frequency exceeds the first preset threshold range, the optical fiber is subjected to shearing and fusion processing, and the shearing and fusion processing includes: cutting off part of the optical fiber and then fusion splicing and shearing en...

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Abstract

According to a method for accurately adjusting and stabilizing the repetition frequency of the mode-locked fiber laser, the repetition frequency of the mode-locked fiber laser can be accurately adjusted and stabilized to a target repetition frequency through the combination of fiber shearing, fiber tapering and the control of a control module. According to the method, the repetition frequency of the mode-locked fiber laser can be accurately adjusted with high efficiency, and the applicable object limit is low.

Description

technical field [0001] The invention belongs to the technical field of lasers, in particular to a method for accurately adjusting and stabilizing the repetition frequency of a mode-locked fiber laser. Background technique [0002] A fiber laser is a laser in which a fiber doped with rare earth elements is used as a gain medium. With the help of passive mode-locking technology, a saturable absorber is added to the fiber laser, and the mode-locked fiber laser constructed can obtain ultrashort pulse output in the order of picoseconds and femtoseconds. As the technology of mode-locked fiber lasers becomes more and more mature, mode-locked fiber lasers have been applied in many fields. Among them, in the field of precision metrology such as dual-comb spectroscopy technology, optical frequency divider, and molecular transition spectral line measurement, higher requirements are put forward for the precise adjustment of the repetition frequency of the mode-locked fiber laser. [0...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/098
CPCH01S3/067H01S3/1109H01S3/1112
Inventor 江天邓清辉殷科张馨宋登辉许中杰
Owner NAT UNIV OF DEFENSE TECH
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