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- Title
Intense frequency upconversion luminescence in Yb<sup>3+</sup>/Tm<sup>3+</sup>-codoped oxychloride germanate glasses.
- Authors
Hongtao Sun; Chunlei Yu; Zhongchao Duan; Gang Zhou; Junjie Zhang; Lili Hu; Zhonghong Jiang
- Abstract
Yb3+/Tm3+-codoped oxychloride germanate glasses for developing potential upconversion lasers have been fabricated and characterized. Structural properties were obtained based on the Raman spectra analysis, indicating that PbCl2 plays an important role in the formation of glass network and has an important influence on the maximum phonon energies of host glasses. Intense blue and weak red emissions centered at 477 and 650 nm, corresponding to the transitions 1 G4 → 3 H6 and 1 G4 → 3 H4, respectively, were observed at room temperature. With increasing PbCl2 content, the intensity of blue (477 nm) emission increases significantly, while the red (650 nm) emission increases slowly. The results indicate that PbCl2 has more influence on the blue emissions than the red emission in oxychloride germanate glasses. The possible upconversion mechanisms are discussed and estimated. Intense blue upconversion luminescence indicates that these oxychloride germanate glasses can be used as potential host material for upconversion lasers.
- Subjects
DOPED semiconductor superlattices; LASERS; LUMINESCENCE; GLASS; OXYCHLORIDES; AMORPHOUS substances; RAMAN effect
- Publication
Journal of Materials Science, 2005, Vol 40, Issue 21, p5675
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-005-1357-5