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Upconversion assisted decay of population inversion in Er-doped silica after delta-pulse excitation
KTH, School of Information and Communication Technology (ICT), Optics and Photonics.
2005 (English)In: IEEE Journal of Quantum Electronics, ISSN 0018-9197, E-ISSN 1558-1713, Vol. 41, no 2, 205-212 p.Article in journal (Refereed) Published
Abstract [en]

We investigate homogeneous upconversion (HUC) assisted decay of the population inversion in Er-doped silica after delta-pulse excitations by means of Monte Carlo simulations. We derive an analytic expression for this decay when energy migration among Er is negligible and show that it is essentially an extension of the Forster-type donor-acceptor quenching decay for the case when donor and acceptor ions are the same species. We compare HUC during the decay to HUC while pumping CW and show that they considerably differ at the low and moderate Er concentrations. Based on Monte Carlo (MC) simulations, we construct a neuristic approximation to the HUC assisted decay, which makes our MC results readily available for the future experimental and theoretical studies and provides simple means for determination of HUC parameters by fitting to experimental data.

Place, publisher, year, edition, pages
2005. Vol. 41, no 2, 205-212 p.
Keyword [en]
erbium, optical fiber amplifiers, optical materials, optical waveguide components, fiber amplifiers, energy-transfer, glasses, mechanisms
Identifiers
URN: urn:nbn:se:kth:diva-14478DOI: 10.1109/jqe.2004.839684ISI: 000226594400012Scopus ID: 2-s2.0-13444288193OAI: oai:DiVA.org:kth-14478DiVA: diva2:332519
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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