Chin. Phys. B ›› 2014, Vol. 23 ›› Issue (1): 14203-014203.doi: 10.1088/1674-1056/23/1/014203

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

Optical properties of ytterbium-doped tandem-pumped fiber oscillator

郝金坪a b, 闫平a, 肖起榕a, 李丹a, 巩马理a   

  1. a Center for Photonics and Electronics, State Key Laboratory of Tribology, Department of Precision Instrument, Tsinghua University, Beijing 100084, China;
    b Science and Technology on Solid State Laser Laboratory, Beijing 100015, China
  • 收稿日期:2013-04-25 修回日期:2013-06-19 出版日期:2013-11-12 发布日期:2013-11-12

Optical properties of ytterbium-doped tandem-pumped fiber oscillator

Hao Jin-Ping (郝金坪)a b, Yan Ping (闫平)a, Xiao Qi-Rong (肖起榕)a, Li Dan (李丹)a, Gong Ma-Li (巩马理)a   

  1. a Center for Photonics and Electronics, State Key Laboratory of Tribology, Department of Precision Instrument, Tsinghua University, Beijing 100084, China;
    b Science and Technology on Solid State Laser Laboratory, Beijing 100015, China
  • Received:2013-04-25 Revised:2013-06-19 Online:2013-11-12 Published:2013-11-12
  • Contact: Gong Ma-Li E-mail:gongml@mail.tsinghua.edu.cn

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摘要： With the rapid development of ytterbium-doped fiber lasers, some obtrusive limitations on power scaling appeared. In order to avoid these problems, a scheme called tandem pumping is introduced into the fiber laser field. In this paper, the optical properties of an ytterbium-doped tandem-pumped fiber oscillator are presented. According to the oscillator profile, the proper gain fiber type and pump wavelength range are picked out, under the comprehensive consideration of laser conversion efficiency and beam quality. In addition, the photodarkening performances of tandem pumping lasers and conventional ones are compared based on practical application, with all possible impact parameters taken into account. Moreover, an all-fibered tandem-pumped oscillator centered at 1079.5 nm is built, in the way of clad pumping by a 1030-nm fiber laser. The laser power of the oscillator reaches 7 W, with an opto-optic efficiency of 82.4%.

关键词: ytterbium-doped fiber laser, tandem-pumped fiber oscillator, premium pump wavelength, photodarkening performances

Abstract: With the rapid development of ytterbium-doped fiber lasers, some obtrusive limitations on power scaling appeared. In order to avoid these problems, a scheme called tandem pumping is introduced into the fiber laser field. In this paper, the optical properties of an ytterbium-doped tandem-pumped fiber oscillator are presented. According to the oscillator profile, the proper gain fiber type and pump wavelength range are picked out, under the comprehensive consideration of laser conversion efficiency and beam quality. In addition, the photodarkening performances of tandem pumping lasers and conventional ones are compared based on practical application, with all possible impact parameters taken into account. Moreover, an all-fibered tandem-pumped oscillator centered at 1079.5 nm is built, in the way of clad pumping by a 1030-nm fiber laser. The laser power of the oscillator reaches 7 W, with an opto-optic efficiency of 82.4%.

Key words: ytterbium-doped fiber laser, tandem-pumped fiber oscillator, premium pump wavelength, photodarkening performances

中图分类号:  (Lasers)

  • 42.55.-f
42.55.Wd (Fiber lasers) 42.81.-i (Fiber optics) 42.60.-v (Laser optical systems: design and operation)