All-Fibre Ytterbium-Doped Photonic Crystal Fibre Laser with High Efficiency

  • Received Date: December 02, 2007
  • Published Date: February 29, 2008
  • A double-cladding ytterbium-doped photonic crystal fibre (PCF) with a 350-μm2 effective area is fabricated. The measurement results show that the PCF has high absorption peak at 915nm. Its fluorescence lifetime is 840μs. Laser experiments with all-fibre configurations are carried out with this fibre. A continuous-wave output power of 3.96W is achieved with a 5.2W launched pump power. The central wavelength of the output spectrum is 1080.22nm. The results show that the PCF laser has a high slope efficiency of 79.6% and light conversion efficiency of 76.2%.
  • Article Text

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