Threshold characteristics of linear cavity Yb-doped double-clad fiber laser |
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| Authors: | Guijun Hu Chengyu Shan Xiaoying Deng Jun Zhang Yuzhai Pan Lijun Wang |
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| Institution: | a Department of Optical Communication, College of Communication Engineering, Jilin University, Nanhu Campus, Nahu Road 20#, Changchun 130012, China;b Science and Technology Developing Center, Changchun University of Science and Technology, Changchun 130000, China;c Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China |
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| Abstract: | The threshold characteristics of linear cavity Yb3+-doped double-clad fiber laser have been studied theoretically and experimentally. By solving rate equations, the expression for threshold pump power is obtained. The effects of fiber length, mirror reflectivity, pump wavelength, laser wavelength and Yb3+ concentration on threshold pump power are discussed. Then, the Yb3+-doped double-clad fiber laser with linear cavity is developed. By using various output couplers, threshold pump power has been measured. The experimental results are in accord with theory. |
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| Keywords: | Fiber lasers Linear cavity Double-clad fiber |
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