Linear polarized Yb3+-doped double-clad fiber laser with an intracavity cubic polarization beam splitter as polarization selection

被引：0

作者：

Feng, Dejun ^{[1
]}

Liu, Guanxiu ^{[1
]}

Zhang, Maosen ^{[1
]}

Liu, Xilu ^{[1
]}

Ning, Ding ^{[2
]}

Jiang, Shouzhen ^{[3
]}

机构：

[1] School of Information Science and Engineering, Shandong University, Jinan

[2] China Electronics Technology Group Corporation No.46 Research Institute

[3] College of Physics and Electronics, Shandong Normal University, Jinan

来源：

Guangxue Xuebao/Acta Optica Sinica | 2014年 / 34卷 / 07期

关键词：

Degree of polarization; Lasers; Polarization maintaning fiber Bragg grating; Slope efficiency;

D O I：

10.3788/AOS201434.0714002

中图分类号：

学科分类号：

摘要：

A single and dual-wavelength switchable linear polarization Yb-doped double-clad fiber laser configuration is proposed, in which the resonance cavity is composed of a fiber Bragg grating fabricated in a polarization maintaining fiber and a high reflectivity dichromatic mirror. A cubic polarization beam splitter (PBS) rotating around its own optical axis is inserted between the high reflection cavity mirror and the collimator in the laser cavity, which is used to adjust the polarization to realize single and dual-wavelength lasing emission. The polarization hole burning is enhanced by the selective polarization feedback from the polarization maintaning fiber Bragg grating (PM-FBG). The relationship between polarization states and rotating angle of PBS is analyzed by using Jones matrix, which agrees well with the experimental results. The laser features wavelength of 1070.08 nm and 1070.39 nm, output power of 1.0 W, signal noise ratio of 48 dB, slope efficiency of 34%, as well as a very narrow linewidth of 0.02 nm. The polarization characteristics are studied by measuring the laser power transmitted through a Glan-Thomson polarizer. The polarization state of the laser is linearly polarized with a polarization degree of 13.37 dB when it is lasing at single wavelength, while it is orthogonal polarization laser for dual wavelength operating.

引用

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