中国物理B ›› 2003, Vol. 12 ›› Issue (2): 178-183.doi: 10.1088/1009-1963/12/2/311

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Controlling the gain shape of Er3+-doped fluorozirconate fibre amplifier by a coherent field

张惠芳, 吴金辉, 高锦岳   

  1. a College of Physics, Jilin University, Changchun 130023, China; b Key Laboratory of Coherent Light, Atomic and Molecular Spectroscopy, Ministry of Education, Changchun 130023, China
  • 收稿日期:2002-07-09 修回日期:2002-10-11 出版日期:2003-02-16 发布日期:2005-03-16
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 60078015), and by the Doctoral Program Foundation of Institutions of Higher Education of China (Grant No 19201038).

Controlling the gain shape of Er3+-doped fluorozirconate fibre amplifier by a coherent field

Zhang Hui-Fang (张惠芳)ab, Wu Jin-Hui (吴金辉)ab, Gao Jin-Yue (高锦岳)ab   

  1. College of Physics, Jilin University, Changchun 130023, China; Key Laboratory of Coherent Light, Atomic and Molecular Spectroscopy, Ministry of Education, Changchun 130023, China
  • Received:2002-07-09 Revised:2002-10-11 Online:2003-02-16 Published:2005-03-16
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 60078015), and by the Doctoral Program Foundation of Institutions of Higher Education of China (Grant No 19201038).

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摘要： We proposed a four-level system to explore the quantum interference effects on optical amplification. We found that the gain of the probe, including positions and values of gain peaks, can be adjusted by changing the coherent field and the incoherent pumping. At the same time, we can also modify the absorption profile of electromagnetically induced transparency by the incoherent pump. The results provide a method to flatten the gain of Erbium-doped fibre amplifiers.

Abstract: We proposed a four-level system to explore the quantum interference effects on optical amplification. We found that the gain of the probe, including positions and values of gain peaks, can be adjusted by changing the coherent field and the incoherent pumping. At the same time, we can also modify the absorption profile of electromagnetically induced transparency by the incoherent pump. The results provide a method to flatten the gain of Erbium-doped fibre amplifiers.

Key words: electromagnetically induced transparency, erbium-doped fibre amplifiers

中图分类号:  (Fiber lasers)

  • 42.55.Wd
42.60.By (Design of specific laser systems) 42.50.Md (Optical transient phenomena: quantum beats, photon echo, free-induction decay, dephasings and revivals, optical nutation, and self-induced transparency) 42.50.Gy (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)