Sensitizing effect of Tm3+ on 2.9 mu m emission from Dy3+-doped Ge25Ga5S70 glass
SCIE
SCOPUS
- Title
- Sensitizing effect of Tm3+ on 2.9 mu m emission from Dy3+-doped Ge25Ga5S70 glass
- Authors
- Heo, J; Cho, WY; Chung, WJ
- Date Issued
- 1997-06-01
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- Energy transfer mechanisms and the effect of Tm3+ addition on the intensity of the Dy3+:2.9 mu m emission from Ge25Ga5S70 glass were investigated. Intensity of the 2.9 mu m fluorescence from Dy3+ increased with increasing Tm3+ content when the Dy3+ concentration remained constant, which indicates the presence of an efficient energy transfer between Tm3+ and Dy3+. A decrease in the measured lifetimes of the Tm3+:F-3(4) level and a wide spectral overlap between the Tm3+:1.8 mu m emission and the absorption of Dy3+:H-6(15/2)-->H-6(11/2) also supported the proposed energy transfer scheme. Analyses of the emission intensities and decay times suggested that a direct energy transfer from the Tm3+:F-3(4) level to Dy3+:H-6(11/2) level occurred after a fast diffusion-limited migration fo the excitation energy among Tm3+.
- Keywords
- FLUOROZIRCONATE FIBER LASERS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/21298
- DOI
- 10.1016/S0022-3093(96)00683-7
- ISSN
- 0022-3093
- Article Type
- Article
- Citation
- JOURNAL OF NON-CRYSTALLINE SOLIDS, vol. 212, no. 2-3, page. 151 - 156, 1997-06-01
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