Linear polarization acousto-optic modulator Q-switched optical fiber laser with single end coupled with optical fiber

A fiber laser and fiber coupling technology, used in lasers, phonon exciters, laser components, etc., can solve the problem of fiber lasers that are not easy to linearly polarize, to ensure linear polarization characteristics, reduce system volume, and avoid insertion loss. Effect

Inactive Publication Date: 2011-07-13
南京海莱特激光科技有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

Because the fiber gain medium is long, and ordinary optical fiber has a certain depolarization effect on linearly polarized light, it is difficult for fiber laser to maintain good linear polarization characteristics during the oscillation process.

Method used

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  • Linear polarization acousto-optic modulator Q-switched optical fiber laser with single end coupled with optical fiber
  • Linear polarization acousto-optic modulator Q-switched optical fiber laser with single end coupled with optical fiber
  • Linear polarization acousto-optic modulator Q-switched optical fiber laser with single end coupled with optical fiber

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Embodiment Construction

[0015] see figure 1 , figure 1 It is a structural schematic diagram of the single-ended fiber-coupled linearly polarized acousto-optic Q-switched fiber laser of the present invention. As can be seen from the figure, the single-ended fiber-coupled linearly polarized acousto-optic Q-switched fiber laser of the present invention consists of a laser diode pump source 1, a pump protector 2, a pump coupler 3, a fiber grating 4 and a double-clad doped fiber laser. The heterogeneous polarization-maintaining optical fibers 5 are fused together by a fiber fusion splicer, and the other end of the double-clad doped polarization-maintaining optical fiber 5 used as a gain medium is ground into a Brewster angle, as shown in figure 2 As shown, that is, the normal line of the output end face and the axis of the fiber form a Brewster angle β, and the axis formed by connecting the stress rod 9 in the double-clad doped polarization-maintaining fiber 5 with the center of the fiber core 10 is the...

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Abstract

The invention relates to a linear polarization acousto-optic modulator Q-switched optical fiber laser with single end coupled with optical fiber which sequentially comprises a laser diode pump source, a pump protector, a pump coupler, an optical fiber grating, a double-clad doped polarization maintaining optical fiber, an optical fiber port coupling lens, an acousto-optic modulator and a plane mirror. The single-end optical fiber-coupled linear polarization acousto-optic modulator Q-switched optical fiber laser has the characteristics of full-optical fiber modular structuring, adjustable high repetition rate, output of linearly polarized light pulse with narrow pulse width and narrow line width, compact structure, small volume, good stability, strong practicality and great application prospect.

Description

technical field [0001] The present invention relates to a fiber laser, in particular to a single-ended fiber-coupled linearly polarized acousto-optic Q-switched fiber laser. High peak power all-fiber laser. technical background [0002] Pulsed fiber lasers with high repetition frequency, high peak power, narrow pulse width, and narrow line width have excellent research value and great application prospects in the fields of medical treatment, scientific research, military and industrial processing, and have always attracted much attention. in one direction. Linearly polarized lasers are required for more demanding precision detection, interferometry, imaging display, optical communication, optical sensing, optical nonlinear frequency conversion, laser beam assembly, and biomedical diagnosis. Therefore, the linearly polarized pulsed fiber laser has been favored by people because of its unique advantages. Because the fiber gain medium is long, and ordinary optical fiber has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/101H01S3/117
Inventor 周军何晶董景星杜松涛
Owner 南京海莱特激光科技有限公司
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