Sensitizing effect of Yb3+ on near-infrared fluorescence emission of Cr4+-doped calcium aluminate glasses
SCIE
SCOPUS
- Title
- Sensitizing effect of Yb3+ on near-infrared fluorescence emission of Cr4+-doped calcium aluminate glasses
- Authors
- Choi, YG; Kim, KH; Han, YS; Heo, J
- Date Issued
- 2000-02
- Publisher
- MATERIALS RESEARCH SOCIETY
- Abstract
- We have demonstrated that an efficient energy transfer takes place from Yb3+ to Cr4+ in calcium aluminate glasses. Yb3+ improves excitation efficiency at around 980 nm, enhancing emission intensity of Cr4+ fluorescence at 1.2-1.6 mu m. Nonradiative energy transfer via electric dipole-dipole interaction between ytterbium and chromium ions was found to be dominant over radiative Yb3+ --> Cr4+ energy transfer. A diffusion-limited energy transfer mechanism well explains the decay behavior of Yb3+/Cr4+-codoped glasses. This codoping scheme may be applicable to other Cr4+-containing crystals and glasses.
- Keywords
- COMPOSITIONAL DEPENDENCE; OXIDE GLASSES; ABSORPTION; SATURATION; STATE; IONS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/20118
- DOI
- 10.1557/JMR.2000.0045
- ISSN
- 0884-2914
- Article Type
- Article
- Citation
- JOURNAL OF MATERIALS RESEARCH, vol. 15, no. 2, page. 278 - 281, 2000-02
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.