Superbroadband near-infrared emission and energy transfer in Pr 3+-Er3+ codoped fluorotellurite glasses

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)12205-12211
Journal / PublicationOptics Express
Volume20
Issue number11
Publication statusPublished - 21 May 2012

Abstract

We report the first demonstration of superbroadband emission extending from 1.30 to 1.68 μm in praseodymium(Pr3+)-erbium(Er3+) codoped fluorotellurite glasses under 488 nm excitation. This superbroad near-infrared emission is contributed by the Pr3+: 1D 21G4 and Er3+: 4I13/24I15/2 transitions which lead to emissions located at 1.48 and 1.53 μm, respectively. The quenching of the Pr3+ emission resulted from the cross relaxation [ 1D2, 3H4]→[1G 4, 3F3,4] was effectively compensated by the codoping of Er3+. The results suggest that, other than the heavy-metal and transition-metal elements of active bismuth (Bi), nickel (Ni), chromium (Cr), etc., Pr3+-Er3+ codoped system is a promising alternative for the broadband near-infrared emission covering the expanded low-loss window. © 2012 Optical Society of America.

Citation Format(s)

Superbroadband near-infrared emission and energy transfer in Pr 3+-Er3+ codoped fluorotellurite glasses. / Zhou, Bo; Tao, Lili; Tsang, Yuen H. et al.
In: Optics Express, Vol. 20, No. 11, 21.05.2012, p. 12205-12211.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review