中国物理B ›› 2015, Vol. 24 ›› Issue (6): 64208-064208.doi: 10.1088/1674-1056/24/6/064208

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

High coupling efficiency and low signal light loss (2+1)× 1 coupler

陈霄a, 肖起榕b, 金光勇a, 闫平b, 巩马理b   

  1. a Province Key Laboratory of Solid Laser Technology and Application, College of Science,Changchun University of Science and Technology, Changchun 130022, China;
    b Center for Photonics and Electronics, State Key Laboratory of Tribology, Department of Precision Instrument, Tsinghua University, Beijing 100084, China
  • 收稿日期:2014-09-10 修回日期:2014-11-24 出版日期:2015-06-05 发布日期:2015-06-05
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 61307057) and the Fund from the State Key Laboratory of Tribology, Tsinghua University (Grant No. SKLT12B08).

High coupling efficiency and low signal light loss (2+1)× 1 coupler

Chen Xiao (陈霄)a, Xiao Qi-Rong (肖起榕)b, Jin Guang-Yong (金光勇)a, Yan Ping (闫平)b, Gong Ma-Li (巩马理)b   

  1. a Province Key Laboratory of Solid Laser Technology and Application, College of Science,Changchun University of Science and Technology, Changchun 130022, China;
    b Center for Photonics and Electronics, State Key Laboratory of Tribology, Department of Precision Instrument, Tsinghua University, Beijing 100084, China
  • Received:2014-09-10 Revised:2014-11-24 Online:2015-06-05 Published:2015-06-05
  • Contact: Gong Ma-Li E-mail:gongml@mail.tsinghua.edu.cn
  • About author:42.55.Wd; 42.55.Xi; 42.81.Qb
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 61307057) and the Fund from the State Key Laboratory of Tribology, Tsinghua University (Grant No. SKLT12B08).

摘要: The coupling efficiency of the pump coupler determines the pump light injection capacity of a laser system. Experimental analysis of the influences of different factors on the pump coupling efficiency is in accordance with this conclusion. We use two Nufern fibers (400 μm/440 μm with NA = 0.22) as pump arm, one Nufern fiber (20 μm/400 μm with NA = 0.06/0.46) as a main fiber to make a side-pumping (2+1)× 1 coupler. The experimental result shows that the total output power of this (2+1)× 1 coupler is about 1160 W, corresponding to a coupling efficiency as high as 98.6%. The loss of signal light is less than 1%.

关键词: fiber lasers, diode-pumped lasers, couplers

Abstract: The coupling efficiency of the pump coupler determines the pump light injection capacity of a laser system. Experimental analysis of the influences of different factors on the pump coupling efficiency is in accordance with this conclusion. We use two Nufern fibers (400 μm/440 μm with NA = 0.22) as pump arm, one Nufern fiber (20 μm/400 μm with NA = 0.06/0.46) as a main fiber to make a side-pumping (2+1)× 1 coupler. The experimental result shows that the total output power of this (2+1)× 1 coupler is about 1160 W, corresponding to a coupling efficiency as high as 98.6%. The loss of signal light is less than 1%.

Key words: fiber lasers, diode-pumped lasers, couplers

中图分类号:  (Fiber lasers)

  • 42.55.Wd
42.55.Xi (Diode-pumped lasers) 42.81.Qb (Fiber waveguides, couplers, and arrays)