Open AccessSuperior photoluminescence (PL) of Pr^3+-In, compared to Pr^3+-Ga, selenide-chalcogenide bulk glasses and PL of optically-clad fiber
Author(s) -
Hesham Sakr,
David Furniss,
Zhuoqi Tang,
Ł. Sójka,
N. A. Moneim,
Emma R. Barney,
S. Sujecki,
T.M. Benson,
Angela B. Seddon
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.021236
Subject(s) - chalcogenide , photoluminescence , selenide , materials science , gallium , chalcogenide glass , indium , ion , optoelectronics , excited state , fiber , optics , atomic physics , chemistry , selenium , physics , organic chemistry , metallurgy , composite material
The photoluminescent-(PL)-properties of Pr³⁺-ions in indium-containing selenide-chalcogenide bulk-glasses are found to be superior when compared with gallium-containing analogues. We observe circa doubling of mid-infrared (MIR) PL intensity from 3.5 to 6 μm for bulk glasses, pumped at 1.55 μm wavelength, and an increased excited state lifetime at 4.7 μm. PL is reported in optically-clad fiber. Ga addition is well known to enhance RE³⁺ solubility and PL behavior, and is believed to form ([RE³⁺]-Se-[Ga(III)]) in the glasses. Indium has the same outer electronic-structure as gallium for solvating the RE-ions. Moreover, indium is heavier and promotes lower phonon energy locally around the RE-ion, thereby enhancing the RE-ion PL behavior, as observed here.