Gain characteristics of ytterbium-doped SiO2-Al2O3-Y2O3 fibers

C. Z. Li, Z. X. Jia, Z. H. Cong, Z. J. Liu, X. Y. Zhang, G. S. Qin, W. P. Qin

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9 Scopus citations


Ytterbium (Yb3+)-doped SiO2-Al2O3-Y2O3 fibers were fabricated by using a molten core method. An Yb3+ doped yttrium aluminium garnet crystal was used as the core material. The doping concentration of Yb3+ in the fabricated SiO2-Al2O3-Y2O3 fibers was measured to be ∼3.26 wt%. The background loss of the above fibers was measured to be ∼0.0085 dB cm-1 at 1560 nm by using a cutback method. The gain characteristics of the Yb3+ doped fiber were measured by using a single mode fiber pigtailed 980 nm laser diode as the pump source, and an unit length gain of ∼3.9 dB cm-1 was obtained for a signal power of ∼0.1 μW at 1036 nm. Our result showed that the Yb3+ doped SiO2-Al2O3-Y2O3 fiber was a potential gain media for constructing narrow line-width fiber lasers.

Original languageEnglish
Article number055804
JournalLaser Physics
Issue number5
StatePublished - 9 Apr 2019
Externally publishedYes


  • SiO2-Al2O3-Y2O3 fiber
  • amplifier
  • gain characteristics
  • ytterbium


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