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Titolo:
Thermal effect on multiphonon-assisted anti-Stokes excited upconversion fluorescence emission in Yb3+-sensitized Er3+-doped optical fiber
Autore:
da Silva, CJ; de Araujo, MT; Gouveia, EA; Gouveia-Neto, AS;
Indirizzi:
Univ Fed Alagoas Maceio, Dept Fis, BR-57072970 Maceio, AL, Brazil Univ FedAlagoas Maceio Maceio AL Brazil BR-57072970 BCMaceio, AL, Brazil
Titolo Testata:
APPLIED PHYSICS B-LASERS AND OPTICS
fascicolo: 2, volume: 70, anno: 2000,
pagine: 185 - 188
SICI:
0946-2171(200002)70:2<185:TEOMAE>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
ER3+/YB3+-CODOPED CHALCOGENIDE GLASS; AMPLIFIED SPONTANEOUS EMISSION; FREQUENCY UP-CONVERSION; RARE-EARTH IONS; ENERGY-TRANSFER; SILICA FIBERS; RELAXATION; LASER; REGION; ER-3+;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: da Silva, CJ Univ Fed Alagoas Maceio, Dept Fis, BR-57072970 Maceio, AL, Brazil Univ Fed Alagoas Maceio Maceio AL Brazil BR-57072970 BCrazil
Citazione:
C.J. da Silva et al., "Thermal effect on multiphonon-assisted anti-Stokes excited upconversion fluorescence emission in Yb3+-sensitized Er3+-doped optical fiber", APP PHYS B, 70(2), 2000, pp. 185-188

Abstract

The temperature effect upon infrared-to-visible frequency upconversion fluorescence emission in Yb3+-sensitized Er3+-doped germanosilicate optical fibers excited with cw radiation at 1.064 mu m is investigated. The experimental results revealed an eightfold enhancement in the visible upconversion emission intensity as the fiber temperature was increased from 17 degrees C to 180 degrees C. The fluorescence emission enhancement is attributed to the temperature-dependent multiphonon-assisted anti-Stokes excitation processof the ytterbium sensitizer. A theoretical approach that takes into account a sensitizer absorption cross-section, which depends on the phonon occupation number, has proven to agree very well with the experimental data.

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Documento generato il 25/06/18 alle ore 17:12:20