Tm3+/Ho3+ co-doped fluorotellurite microstructure fiber for 2.1 μm lasing

Cheng Zhi Li, Chuan Fei Yao, Shun Bin Wang, Zhi Xu Jia, Chun Feng He, Dan Zhao, Guan Shi Qin, Wei Ping Qin

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Tm3+/Ho3+ co-doped fluorotellurite microstructure fibers with low concentration of -OH were fabricated by using a rod-in-tube method. Pumped by 1 560 nm fiber laser, electron at Tm3+:3H6 jump to Tm3+:3F4, and then energy transfer from Tm3+ to Ho3+ can occure for the reason of small energy gap (745 cm-1) between Tm3+:3F4 and Ho:5I7, fluorescence at ~2.1 μm can be obtained with the transition from level of Ho3+:5I7 to Ho3+:5I8. By using a 1560 nm Er3+ doped fiber laser as the pump source, an all-fiber lasing at 2 063 nm is obtained from a 18 cm Tm3+/Ho3+ co-doped fluorotellurite microstructure fiber. The corresponding slope efficiency is about 12.9%, the threshold is 163 mW, and the maximum unsaturated laser output power is 40 mW. The results indicate that the Tm3+/Ho3+ doped fluorotellurite microstructure fiber is a promising gain medium for 2.1 μm fiber laser.

Original languageEnglish
Pages (from-to)74-80
Number of pages7
JournalChinese Journal of Luminescence
Volume37
Issue number1
DOIs
StatePublished - 1 Jan 2016
Externally publishedYes

Keywords

  • 2.1 μm lasing
  • Fluorotellurite glasses
  • Microstructure fiber
  • Tm/Ho co-doped

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