Excitation back transfer in a statistical model for upconversion in Er-doped fibres
2007 (English)In: Journal of the European Optical Society - Rapid Publications, ISSN 1990-2573, Vol. 2, 07027- p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2007. Vol. 2, 07027- p.
erbium, fibre amplifier, upconversion
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-46438DOI: 10.2971/jeos.2007.07027ISI: 000206312800024ScopusID: 2-s2.0-75849139312OAI: oai:DiVA.org:kth-46438DiVA: diva2:454229
QC 201111072011-11-072011-11-032011-11-07Bibliographically approved