Amplification of CW Single-Frequency Lasers

  • Zhongmin Yang
  • Can Li
  • Shanhui Xu
  • Changsheng Yang
Part of the Optical and Fiber Communications Reports book series (OFCR, volume 8)


In this chapter, we focus on the amplification of continuous-wave single-frequency lasers. In this case, the single-frequency power scaling is mainly limited by the stimulated Brillouin scattering and thermal effects in the amplifying fiber. To address these problems, different schemes have been proposed to suppress the fiber nonlinear and thermal effects, a most popular one is using large mode area active fiber to decrease the laser intensity and thermal energy per unit area. The layout trifurcates into three sections concerning the laser amplification in the 1.0 μm, 1.5 μm, and 2.0 μm regions, which corresponds to the well-known dopants (i.e., erbium, ytterbium, and thulium ions) in optical fiber. In each section, the emission characteristics such as the spectral features of the corresponding rare-earth dopants are first introduced. Then a theoretical mode is established for the analysis of the fiber amplifiers in the three wavelength bands. Finally, experimental progress on single-frequency fiber amplification is introduced and discussed in each section.


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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Zhongmin Yang
    • 1
  • Can Li
    • 2
  • Shanhui Xu
    • 1
  • Changsheng Yang
    • 1
  1. 1.State Key Laboratory of Luminescent Materials and Devices and Institute of Optical Communication MaterialsSouth China University of TechnologyGuangzhouChina
  2. 2.Department of Electrical and Electronic EngineeringThe University of Hong KongHongkongChina

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