Pokhrel, Madhab and Kumar, G A and Balaji, Sathravada and Debnath, Radhaballabh and Sardar, Dhiraj K (2012) Optical characterization of Er3+ and Yb3+ co-doped barium fluorotellurite glass. Journal of Luminescence, 132 (8). pp. 1910-1916. ISSN 0022-2313

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Abstract

Spectroscopic studies of Er3+/Yb3+ co-doped (Ba,La)-fluorotellurite glass composition have been carried out using standard experimental and theoretical methods. Quantitative analyses of the room temperature absorption and emission spectra as well as the emission lifetimes yield various important spectroscopic parameters such as the radiative decay rates, fluorescence branching ratios, and emission/absorption cross sections. In addition, internal radiative quantum yields have been determined for the infrared emission at 1571 nm and for the upconversion emission at 547 nm. The influence of various non-radiative properties such as multiphonon relaxation, concentration quenching, and quenching by hydroxyl radicals have also been quantitatively estimated and correlated with the observed spectral properties. The comparative studies with the other composition of tellurite and different glasses showed that present glass composition could be a potential candidate for the broadband amplifier. (C) 2012 Elsevier B.V. All rights reserved.

Item Type:	Article
Uncontrolled Keywords:	Tellurite glass; Absorption spectra; Fluorescence spectra; Upconversion; Radiative; Energy transfer
Subjects:	Glass
Divisions:	Glass
Depositing User:	Bidhan Chaudhuri
Date Deposited:	26 Jul 2012 10:01
Last Modified:	26 Jul 2012 10:01
URI:	http://cgcri.csircentral.net/id/eprint/1658

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