Journal
OPTICAL MATERIALS
Volume 32, Issue 2, Pages 339-344Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optmat.2009.08.012
Keywords
Laser materials; Glasses; Sm3+ ions; Judd-Ofelt theory
Categories
Funding
- CSIR, New Delhi
Ask authors/readers for more resources
Glasses having composition 20ZnO center dot xBi(2)O(3)center dot(79 - x)B2O3 (15 <= x <= 35 mol%) and doped with 1 mol% Sm3+ ions have been prepared by melt quench technique. Optical absorption and fluorescence spectra have been recorded. Judd-Ofelt approach has been applied for the f <-> f transition of Sm3+ ions to evaluate various intensity parameters (Omega(2),Omega(4),Omega(6)). The variations in intensity parameters, radiative transition probabilities and hypersensitive band positions with composition have been discussed. The variation of Omega(2) with Bi2O3 content have been attributed to change in the asymmetry of the ligand field at the rare earth ion site and to the changes in their rare earth-oxygen (RE-O) covalency, whereas the variation of Omega(6) is found to be strongly dependent on nephlauxetic effect. The shift of the hypersensitive band shows that the covalency of the RE-O bond increases with increase of Bi2O3 content due to increased interaction between the Sm3+ ion and non-bridging oxygens. The radiative transition probabilities for the Sm3+ ions are large in zinc bismuth borate glasses, suggesting their suitability as laser material. (C) 2009 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available