An Efficient Single-Frequency Yb-Doped All-Fiber MOPA Laser at 1064.3nm
Jin Kang1,2,3, Bao-Le Lu1,2,3**, Xin-Yuan Qi1,2,4, Xiao-Qiang Feng1,2,3, Hao-Wei Chen1,2,3, Man Jiang1,2,3, Yang Wang1,2,3, Pan Fu1,2,3, Jin-Tao Bai1,2,3,4
1National Key Laboratory of Photoelectric Technology and Functional Materials (Culture Base), Institute of Photonics and Photon-Technology, Northwest University, Xi'an 710069 2Shaanxi Engineering Technology Research Center for Solid State Lasers and Application, Xi'an 710069 3Institute of Photonics and Photon-technology, Provincial Key Laboratory of Photo-electronic Technology, Northwest University, Xi'an 710069 4School of Physics, Northwest University, Xi'an 710069
Abstract：An efficient narrow-linewidth single-frequency (SF) Yb-doped all-fiber master oscillator power amplifier (MOPA) laser operating at 1064.3 nm is demonstrated experimentally. A ring cavity SF fiber laser is used as the seed source for the MOPA system and the Yb-doped fibers are employed as the gain medium or the saturable absorber. The SF operation is observed to be stable without mode hopping. The highest output power of 266 mW is obtained under the 400 mW pump power with the corresponding slope efficiency of 66.2%. The linewidth of the amplified output laser is approximately 1 kHz and its optical signal-to-noise ratio is over 45 dB.
2016, Vol. 33 
