Enhanced 1.8 µm emission in Cr3+/Tm3+ co-doped fluorogermanate glasses for a multi-wavelength pumped near-infrared lasers

W. C. Wang; J. Yuan; D. D. Chen; J. J. Zhang; S. Q. Xu; Q. Y. Zhang

doi:10.1063/1.4900860

AIP Advances (Oct 2014)

Enhanced 1.8 µm emission in Cr3+/Tm3+ co-doped fluorogermanate glasses for a multi-wavelength pumped near-infrared lasers

W. C. Wang,
J. Yuan,
D. D. Chen,
J. J. Zhang,
S. Q. Xu,
Q. Y. Zhang

Affiliations

W. C. Wang: State Key Lab of Luminescent Materials and Devices, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641, P.R. China
J. Yuan: State Key Lab of Luminescent Materials and Devices, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641, P.R. China
D. D. Chen: State Key Lab of Luminescent Materials and Devices, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641, P.R. China
J. J. Zhang: College of Material Science and Engineering, China Jiliang University, Hangzhou 310018, Zhejiang, P. R. China
S. Q. Xu: College of Material Science and Engineering, China Jiliang University, Hangzhou 310018, Zhejiang, P. R. China
Q. Y. Zhang: State Key Lab of Luminescent Materials and Devices, and Institute of Optical Communication Materials, South China University of Technology, Guangzhou 510641, P.R. China

DOI: https://doi.org/10.1063/1.4900860
Journal volume & issue: Vol. 4, no. 10
pp. 107145 – 107145-8

Abstract

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Cr3+/Tm3+ co-doped fluorogermanate glasses were prepared by melt-quenching technique, and their luminescent properties were investigated under excitation of Xenon lamp and 808 nm laser diode, respectively. Through strong sensitization of Cr3+, an enhanced 1.8 µm emission band of Tm3+: 3F4→3H6 can be achieved in an extremely extended excitation band of 380-900 nm. The possible energy transfer mechanism between Cr3+ and Tm3+ is rationally discussed. On the basis of experimental data, the highest energy transfer efficiency is up to 91.70%. Our results suggest this efficient Cr3+/Tm3+ co-doping system provides a selective pump mechanism for obtaining 1.8 µm laser and thus shows attractive applications in near-infrared fiber lasers and amplifiers.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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