Effect of host glass on the optical absorption properties of $Nd^{3+}$, $Sm^{3+}$, and $Dy^{3+}$ in lead borate glasses

Saisudha, MB and Ramakrishna, J (1996) Effect of host glass on the optical absorption properties of $Nd^{3+}$, $Sm^{3+}$, and $Dy^{3+}$ in lead borate glasses. In: Physical Review B, 53 (10). pp. 6186-6196.

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Abstract

The effect of host glass composition on the optical absorption spectra of $Nd^{3+}$, $Sm^{3+}$, and $Dy^{3+}$ in lead borate glasses, with PbO contents varying from 30 to 70 mol %, has been analyzed using Judd-Ofelt theory and the compositional dependence has been determined for the hypersensitive bands. Judd-Ofelt intensity parameters $\Omega_t$ (t=2,4,6), and the radiative transition probabilities. The variation of $\Omega_2$ with PbO content has been attributed to changes in the asymmetry of the ligand field at the rare-earth (R) site due to the structural changes and to changes in R-O covalency, whereas the variation of $\Omega_6$ has been related to the variation in R-O covalency. The radiative transition probabilities of the rare-earth ions are large in lead borate glasses suggesting their suitability for laser applications.

Item Type:	Journal Article
Publication:	Physical Review B
Publisher:	American Physical society
Additional Information:	Copyright of this article belongs to American Physical society.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	14 Dec 2006
Last Modified:	19 Sep 2010 04:33
URI:	http://eprints.iisc.ac.in/id/eprint/9132

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