A Method for Accurately Adjusting and Stabilizing the Repetition Rate of Mode-Locked Fiber Lasers

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

Active Publication Date: 2022-04-19
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

Method used

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  • A Method for Accurately Adjusting and Stabilizing the Repetition Rate of Mode-Locked Fiber Lasers
  • A Method for Accurately Adjusting and Stabilizing the Repetition Rate of Mode-Locked Fiber Lasers
  • A Method for Accurately Adjusting and Stabilizing the Repetition Rate of Mode-Locked Fiber Lasers

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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. The shearing and fusion processing includes: cutting off part of the optical fiber and then fusion splicing and shearing end, o...

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Abstract

A method for precisely adjusting and stabilizing the repetition rate of a mode-locked fiber laser, through the combination of fiber cutting, fiber taper and control module control, can precisely adjust and stabilize the repetition rate of the mode-locked fiber laser to the target repetition rate. The method enables the precise adjustment of the repetition frequency of the mode-locked fiber laser to have high efficiency and low limitation of applicable objects.

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...

Claims

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Application Information

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Patent Type & Authority Patents(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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