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Excitation back transfer in a statistical model for upconversion in Er-doped fibres
KTH, Skolan för informations- och kommunikationsteknik (ICT), Mikroelektronik och tillämpad fysik, MAP.
2007 (engelsk)Inngår i: Journal of the European Optical Society - Rapid Publications, ISSN 1990-2573, E-ISSN 1990-2573, Vol. 2, s. 07027-Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We report a new analytical method to evaluate the accuracy of a statistical model of the migration assisted upconversion in Er-doped fibres. Unlike the mean-field approach to the excitation back transfer which was used in a previous statistical model, we use a new approximation accounting for the variance of population of the first excited level. Such an approach presents more realistic physical description of the excitation - emission processes in heavily-doped Er-based fibres. Implementing these results, we find that the accuracy of upconversion rate calculations is within 13% if the concentration of erbium ions is smaller than the critical one.

sted, utgiver, år, opplag, sider
2007. Vol. 2, s. 07027-
Emneord [en]
erbium, fibre amplifier, upconversion
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-46438DOI: 10.2971/jeos.2007.07027ISI: 000206312800024Scopus ID: 2-s2.0-75849139312OAI: oai:DiVA.org:kth-46438DiVA, id: diva2:454229
Merknad
QC 20111107Tilgjengelig fra: 2011-11-07 Laget: 2011-11-03 Sist oppdatert: 2017-12-08bibliografisk kontrollert

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