Fluorescence dynamics and rate equations analysis in Er3+,Yb3+ doped double tungstates

Pujol, Maria (author): Fisica I Cristal-Lografia de Materials (FiCMA), Universitat Rovira I Virgili, Spain

Aguiló, Magdalena (author): Fisica I Cristal-Lografia de Materials (FiCMA), Universitat Rovira I Virgili, Spain

Díaz, Francesc (author): Fisica I Cristal-Lografia de Materials (FiCMA), Universitat Rovira I Virgili, Spain

(creator_code:org_t)

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; show less...

Abstract Subject headings

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.

By the author/editor: Bjurshagen, Stef ...; Hellström, Jonas; Pasiskevicius, V ...; Pujol, Maria; Aguiló, Magdalen ...; Díaz, Francesc

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Other Physics To ...

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