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

A ring cavity and all-fiber technology, applied in the laser field, can solve the problems of non-adjustable repetition frequency and poor stability, and achieve the effect of good light wave mode, good stability and narrow pulse width

Inactive Publication Date: 2008-12-17
CHINA KEHAN LASER FUJIAN
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  • Abstract
  • Description
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  • Application Information

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

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Embodiment Construction

[0024] see figure 1 , the present invention is mainly composed of a semiconductor pump source 1, an optical fiber wavelength division multiplexer 2, a gain optical fiber 3, an ytterbium-doped optical fiber, an optical fiber isolator 4, an acousto-optic modulator with a pigtail 5, and an optical fiber coupler 6.

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

[0026] Each optical device is sequentially spliced ​​end to end with an optical fiber fusion splicer to form an all-fiber ring cavity structure. Since each optical device is connected by welding, the connection loss is very small, and the loss of each node is less than 0.03dB. The loss in t...

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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 technical field of lasers, and in particular relates to an active Q-switched laser with an all-fiber ring cavity. Background technique [0002] Fiber Q-switched lasers have the characteristics of low energy consumption, long life, high stability, good beam quality, and high photoelectric conversion efficiency. They are widely used in many fields such as communications, military, medical, and industrial processing, and are considered to be the next generation of lasers. direction of development. [0003] At present, most of the Q-switching devices of all-fiber Q-switched lasers use fiber interference rings, or use the nonlinear effect of optical fibers to realize passive self-Q-switching. The frequency is not adjustable. Contents of the invention [0004] The object 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-adjust...

Claims

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Application Information

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Patent Type & Authority Patents(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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