Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5403002 | Journal of Luminescence | 2009 | 6 Pages |
Abstract
A series of Er3+-doped Bi2O3-B2O3-GeO2-Na2O glasses with different OHâ group contents were prepared and the interactions between Er3+ ions and OHâ groups were investigated. The observed increase of the fluorescence intensity and decaying variation from an evident non-exponential to a nearly exponential behavior of the Er3+:4I13/2 level with the oxygen gas bubbling time was related to the reduction of the OHâ group contents evidenced by infrared (IR) absorption spectra, which demonstrated that the OHâ groups were dominant quenching centers of the excited Er3+. Meanwhile, by reducing the OHâ group contents in the fiber cores with the same glass composition, the simulated gain characteristics improved dramatically and a 12.4Â dB gain at 1560Â nm was achieved in a 20Â cm fiber with 150Â mW pumping power at 980Â nm.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Yaxun Zhou, Na Gai, Jun Wang, Fen Chen, Gaobo Yang,