Energy transfer and frequency upconversion in Yb3+–Er3+-doped PbO-GeO2 glass containing silver nanoparticles

Autor:	Jonas Jakutis Neto, Cid B. de Araújo, Luciana R. P. Kassab, F.A. Bomfim, J.R. Martinelli, Niklaus Ursus Wetter
Rok vydání:	2008
Předmět:	Materials science Physics and Astronomy (miscellaneous) Doping General Engineering Analytical chemistry General Physics and Astronomy Resonance Nanotechnology Laser Silver nanoparticle Photon upconversion law.invention Ion law Local field Excitation
Zdroj:	Applied Physics B. 94:239-242
ISSN:	1432-0649 0946-2171
DOI:	10.1007/s00340-008-3249-2
Popis:	We report the infrared-to-visible frequency up- conversion in Er 3+ -Yb 3+ -codoped PbO-GeO2 glass con- taining silver nanoparticles (NPs). The optical excitation is made with a laser at 980 nm in resonance with the 2 F5/2 → 2 F7/2 transition of Yb 3+ ions. Intense emission bands cen- tered at 525, 550, and 662 nm were observed correspond- ing to Er 3+ transitions. The simultaneous influence of the Yb 3+ → Er 3+ energy transfer and the contribution of the in- tensified local field effect due to the silver NPs give origin to the enhancement of the whole frequency upconversion spec- tra.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7a608d2a40957882cd4e51652557cfcf https://doi.org/10.1007/s00340-008-3249-2 Zobrazit plný text záznamu Full text from SpringerLink