Annapurna, K and Das, Maumita and Buddhudu, S (2007) Spectral analysis of thulium doped zinc-boro-silicate glass. Physica B-Condensed Matter, 388 (1-2). pp. 174-179. ISSN 0921-4526

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Abstract

This paper reports on the results concerning the optical absorption and photoluminescence spectra of Tin(3+)-doped zinc-boro-silicate (ZBS) glass. Absorption spectrum of this glass has revealed seven absorption bands in the wavelength region of 300-2000 nm. From the measured oscillator strengths of these absorption bands, three phenomenological Judd-Ofelt intensity (Omega 2, Omega 4, Omega 6) parameters have been computed by the application of a least-squares fit analysis. These intensity characteristic factors have successfully been used in evaluating the radiative properties of the emission transitions of the rare earth ion (Tm3+) in zinc borosilicate glass. The measured emission profile of this Tin(3+)-glass, has displayed three emission bands such as D-1(2) -> H-3(4) (weak blue), (1)G(4) -> H-3(6) (strong blue) and (1)G(4) -> H-3(4) (weak red), when excited by 356 nm wavelength. Lifetime (tau(m)) of the blue emission ((1)G(4) -> H-3(6)) at 473 nm has been measured and compared with the radiative lifetime (tau(R)) obtained based on the application of Judd-Ofelt theory. Non-radiative relaxation mechanisms have been attributed to the multiphonon-assisted relaxation on the basis of the high-energy phonon modes that could be found in the glass network.

Item Type:	Article
Uncontrolled Keywords:	Glasses; Optical materials; Luminescence; Tm3+-fluorescence
Subjects:	Glass
Divisions:	Glass
Depositing User:	Namita Dutta
Date Deposited:	17 Jan 2012 07:07
Last Modified:	11 Jun 2015 06:40
URI:	http://cgcri.csircentral.net/id/eprint/219

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