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High-repetition-frequency tunable mode locking fiber laser and laser generation method and application

A fiber laser and high repetition frequency technology, applied in the laser field, can solve problems such as limited application and limited tuning wavelength range, and achieve the effect of broad application prospects

Active Publication Date: 2019-02-05
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0004] However, the traditional passively mode-locked fiber lasers have limited tunable wavelength range, which limits their further applications

Method used

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  • High-repetition-frequency tunable mode locking fiber laser and laser generation method and application
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  • High-repetition-frequency tunable mode locking fiber laser and laser generation method and application

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Embodiment Construction

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as...

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Abstract

The present invention relates to a high-repetition-frequency tunable mode locking fiber laser and a laser generation method and application. The laser employs a mode selection coupler to convert pumping light to light in a linear polarization mode, the light in the linear polarization mode is adaptive to an ultra wide band high-gain optical fiber to be subjected to generation of gain light in shape, a polarization controller is employed to control the light in the linear polarization mode for rotation to allow the maximum value of the light field to be located at different gain areas of the ultra wide band high-gain optical fiber to excite different luminescent ions to generate corresponding gain light so as to achieve laser switching between different wavebands. The laser is different from a traditional and common mode locking laser, the laser outputs a mode locking pulse with an adjustable wavelength in a range of 1450-2150nm and with a repetition frequency of 500MHz, and compared toa traditional active mode locking laser, the high-repetition-frequency tunable mode locking fiber laser and the laser generation method and application are simple in structure and convenient to carry.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a high-repetition-frequency tunable mode-locked fiber laser, a laser generation method and its application. Background technique [0002] Different types of fiber lasers have different output characteristics. In recent years, with the continuous development of science and technology, various new fiber pulse lasers have emerged, such as Q-switched fiber lasers, gain-switched fiber lasers, mode-locked fiber lasers, and quasi-mode-locked fiber lasers. These fiber lasers play various roles in various fields according to their unique output performance. Doped with thulium (Tm 3+ ) mode-locked fiber laser as an example, because the broadband gain of thulium ions at 1.8-2.1 μm covers the "fingerprint area" of a large number of atmospheric molecules, so thulium-doped mode-locked fiber lasers are often used in high-sensitivity gas detection. [0003] Among all kinds of lasers, mode-lock...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/098H01S3/094H01S3/067
CPCH01S3/06716H01S3/094003H01S3/094042H01S3/094049H01S3/1118
Inventor 杨中民乔田唐国武
Owner SOUTH CHINA UNIV OF TECH
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