Journal of the Optical Society of Korea

  • 제20권6호
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  • Pages.716-721
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  • 2016
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  • 1226-4776(pISSN)
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  • 2093-6885(eISSN)
한국광학회 (Optical Society of Korea)
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High Power Switchable Dual-Wavelength Linear Polarized Yb-Dozped Fiber Laser around 1120 nm

  • Liu, Xiaojuan (School of Science, Shandong University of Technology) ;
  • Huang, Bangcai (China Electronics Technology Group Corporation, 46th Research Institute) ;
  • Wei, Gongxiang (School of Science, Shandong University of Technology) ;
  • Han, Kezhen (School of Science, Shandong University of Technology) ;
  • Huang, Yan (School of Science, Shandong University of Technology) ;
  • Liu, Fangfang (School of Science, Shandong University of Technology)
  • 투고 : 2016.06.27
  • 심사 : 2016.11.01
  • 발행 : 2016.12.25
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초록

A single-and dual-wavelength switchable polarized Yb-doped double-clad fiber laser around 1120 nm based on a pair of fiber Bragg gratings (FBGs) is demonstrated. The polarization-maintaining (PM) linear cavity is composed of a double clad PM Yb-doped fiber (YDF) and a pair of PM FBGs. The laser can operate in stable dual-wavelength or wavelength-switching modes due to the polarization hole burning (PHB) and the spatial hole burning (SHB) enhanced by the PM linear cavity. In dual-wavelength operation, the two orthogonally polarized wavelengths are centered at 1118.912 nm and 1119.152 nm, with an interval of 0.24 nm and a signal to noise ratio (SNR) of 35 dB. The maximum output power is 14.67 W when the launched LD pump is 24 W corresponding to an optical efficiency of 61.1%. The lasing lines switchover may be realized by adjusting the polarization controller (PC) fitted in the cavity. The two single-wavelengths are 1118.912 nm and 1119.152 nm. When the injected LD pump is 24 W, the highest output powers are 7.68 W and 8.64 W corresponding to optical efficiencies of 32% and 36% respectively. The spectral linewidth of the lasing lines are 0.075 nm and 0.07 nm, and the average numerical values of PER aredB and 19.9 dB, respectively.

키워드

참고문헌

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피인용 문헌

  1. High-power continuous-wave dual-wavelength diode-pumped Yb:YAG slab amplifier with temperature-dependent effects vol.123, pp.10, 2017, https://doi.org/10.1007/s00340-017-6834-4