All-optical-fibre annular-type cavity active Q-switched laser

A ring cavity and all-fiber technology, which is applied in the laser field, can solve problems such as poor stability and non-adjustable repetition frequency, and achieve good stability, good light wave mode, and shortened fiber length.

Inactive Publication Date: 2007-04-25
CHINA KEHAN LASER FUJIAN
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an all-fiber ring cavity active Q-switched laser, which solves the technical problems of poor stability and non-adjustable repetition rate in the background technology

Method used

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Embodiment Construction

[0024] Referring to Fig. 1, the present invention mainly consists of semiconductor pump source 1, fiber wavelength division multiplexer 2, gain fiber 3, ytterbium-doped fiber, fiber isolator 4, pigtailed acousto-optic modulator 5, and fiber coupler 6 composition.

[0025] The acousto-optic modulator 5 with pigtails with high extinction ratio and short rise time is used as the acousto-optic modulation Q switch, and the Q-switching output is controlled by an external electrical signal, that is, the peripheral circuit is used to ensure the normal and stable operation of the acousto-optic modulator 5 To ensure high-quality Q-switched pulses.

[0026] Each optical device is spliced ​​end to end in sequence with an optical fiber fusion splicer to form an all-fiber ring cavity structure. Due to the use of fusion splicing to connect each optical device, the connection loss is very small, and the loss of each node is less than 0.03dB. The loss in the all-fiber ring cavity is mainly compose...

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Abstract

The invention relates to an optical fiber annular chamber active Q-adjust laser, which comprise pump source, optical fiber wavelength-division multiplex device, increment optical fiber, sound-optical fiber modulator, and optical fiber couple output device. Wherein, two inputs of wavelength-division multiplex device are 980nm and 1060nm; the 980nm end is connected to the output of pump source; the 95.03 end of optical fiber couple output device is connected to the 1060nm end; the 4.97 end of output device is the laser output. The invention has compact structure, small volume, low consumption, and high-quality laser beam.

Description

Technical field [0001] The invention belongs to the field of laser technology, and specifically relates to an all-fiber ring cavity active Q-switched laser. Background technique [0002] Fiber Q-switched laser has the characteristics of low energy consumption, long life, high stability, good beam quality, and high photoelectric conversion efficiency. It has a wide range of applications in many fields such as communications, military, medicine, and industrial processing. It is considered to be the next generation of lasers. Development direction. [0003] At present, the Q-switching devices of all-fiber Q-switched lasers mostly use fiber interference loops, or use the nonlinear effect of the fiber to achieve passive self-Q adjustment. The disadvantage is that the stability of laser pulse output is poor, and the requirements for external conditions are strict and repeated. The frequency is not adjustable. Summary of the invention [0004] The purpose of the present invention is to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/083H01S3/127H01S3/117
Inventor 赵卫高存孝朱少岚王屹山陈国夫
Owner CHINA KEHAN LASER FUJIAN
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