Fluorescence dynamics and rate equations analysis in Er3+,Yb3+ doped double tungstates
2006 (English)In: Applied Optics, ISSN 0003-6935, E-ISSN 1539-4522, Vol. 45, no 19, 4715-4725 p.Article in journal (Refereed) Published
The fluorescence dynamics in Er3+ and Yb3+ doped KGd(WO4)(2) and KY(WO4)(2) has been investigated. Lifetimes have been measured for the Yb(F-2(5/2)), Er(I-4(13/2)), and Er(S-4(3/2)) levels around 1, 1.5, and 0.55 mu m, respectively. The Yb(F-2(5/2)) lifetimes show a decreasing trend toward the limiting Er(I-4(11/2)) lifetime with increasing Er-to-Yb concentration ratio, whereas the Er(I-4(13/2)) lifetimes are mostly unaffected by the doping concentrations. A rate equation analysis has been performed to explain the observed behavior and gain is calculated for a continuous-wave laser at 1.53 mu m to find the optimum doping concentrations for high gain.
Place, publisher, year, edition, pages
2006. Vol. 45, no 19, 4715-4725 p.
Continuous-wave lasers; Doping concentrations; Fluorescence dynamics; Rate equation analysis; Concentration (process); Equations of state of solids; Erbium compounds; Semiconductor doping; Solid state lasers; Tungsten compounds; Ytterbium compounds
Other Physics Topics
IdentifiersURN: urn:nbn:se:kth:diva-5454DOI: 10.1364/AO.45.004715ISI: 000238665900028ScopusID: 2-s2.0-33746174995OAI: oai:DiVA.org:kth-5454DiVA: diva2:9824
QC 20100713. Uppdaterad från Accepted till Published 20100713.2006-03-132006-03-132011-10-03Bibliographically approved