El-Mallawany, R and Patra, A and Friend, CS and Kapoor, R and Prasad, PN (2004) Study of luminescence properties of Er(3+)-ions in new tellurite glasses. OPTICAL MATERIALS, 26 (3). pp. 267-270. ISSN 0925-3467

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Abstract

The effects of concentration of Er(3+) ions in tellurite glasses on the decay time, spectral width and weighted spectral peak are studied. A broad emission spectrum of width 121 nm peaked at wavelength of 1.5 mum is obtained in 2.5 mol% Er doped glasses. The maximum decay time of (4)I(13/2) —> (4)I(15/2) transition (at wavelength 1.5 mum) is about 4.5 ms for 1.0 mol% Er doped glasses. Strong green and red upconversion emission at emission 550 nm ((4)S(3/2) —> (4)I(15/2)) and 670 nm ((4)F(9/2) —> (4)I(15/2)) are observed from Er(3+)-doped tellurite glasses upon continuous wave excitation at 975 nm. It is found that the upconversion efficiency goes up with the increasing concentration of the Er(3+) ions. (C) 2004 Elsevier B.V. All rights reserved.

Item Type:	Article
Uncontrolled Keywords:	tellurite glass; rare-earth; luminescence; upconversion
Subjects:	Glass
Divisions:	UNSPECIFIED
Depositing User:	Subhra Lahiri
Date Deposited:	24 Jan 2012 11:51
Last Modified:	24 Jan 2012 11:51
URI:	http://cgcri.csircentral.net/id/eprint/484

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