Superior photoluminescence (PL) of Pr³âº-In, compared to Pr³âº-Ga, selenide-chalcogenide bulk glasses and PL of optically-clad fiber.
Opt Express
; 22(18): 21236-52, 2014 Sep 08.
Article
en En
| MEDLINE
| ID: mdl-25321504
ABSTRACT
The photoluminescent-(PL)-properties of Pr³âº-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 RE³âº solubility and PL behavior, and is believed to form ([RE³âº]-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.
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1
Bases de datos:
MEDLINE
Asunto principal:
Fibras Ópticas
/
Tecnología de Fibra Óptica
/
Galio
/
Vidrio
/
Indio
Idioma:
En
Revista:
Opt Express
Asunto de la revista:
OFTALMOLOGIA
Año:
2014
Tipo del documento:
Article