Spectroscopic investigations and luminescence spectra of Nd3+ and Dy3+ doped different phosphate glasses

Seshadri, M and Rao, K Venkata and Rao, J Lakshmana and Rao, KSR Koteswara and Ratnakaram, YC (2010) Spectroscopic investigations and luminescence spectra of Nd3+ and Dy3+ doped different phosphate glasses. In: Journal of Luminescence, 130 (4). pp. 536-543.

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Abstract

Spectral properties of Nd3+ and Dy3+ ions in different phosphate glasses were studied and several spectroscopic parameters were reported. Covalency of rare-earth-oxygen bond was studied in these phosphate glass matrices with the variation of modifier in host glass matrix Using Judd-Ofelt intensity parameters (Omega(2), Omega(4) and Omega(6)), radiative transition probabilities (A) and radiative lifetimes (tau(R)) of certain excited states of Nd3+ and Dy3+ ions are estimated in these glass matrices. From the magnitudes of branching ratios (beta(R)) and integrated absorption cross-sections (Sigma), certain transitions of both the ions are identified for laser excitation. From the emission spectra, peak stimulated emission cross-sections (sigma(P)) are evaluated for the emission transitions observed in all these phosphate glass matrices for both Nd3+ and Dy3+ ions. (C) 2009 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	Journal of Luminescence
Publisher:	Elsevier Science.
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	Rare-earth ions; Absorption spectrum; Transition probability; Lifetime; Emission cross-section
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	29 Mar 2010 10:56
Last Modified:	19 Sep 2010 05:57
URI:	http://eprints.iisc.ac.in/id/eprint/26233

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