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

QC 20100713. Uppdaterad från Accepted till Published 20100713.
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.

NATURVETENSKAP Fysik Annan fysik hsv//swe
NATURAL SCIENCES Physical Sciences Other Physics Topics hsv//eng
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
Physics
Fysik

Hellström, JonasKTH,Laserfysik(Swepub:kth)u1d0wipt (författare)
Pasiskevicius, ValdasKTH,Laserfysik(Swepub:kth)u108iqot (författare)
Pujol, MariaFisica I Cristal-Lografia de Materials (FiCMA), Universitat Rovira I Virgili, Spain (författare)
Aguiló, MagdalenaFisica I Cristal-Lografia de Materials (FiCMA), Universitat Rovira I Virgili, Spain (författare)
Díaz, FrancescFisica I Cristal-Lografia de Materials (FiCMA), Universitat Rovira I Virgili, Spain (författare)
KTHLaserfysik (creator_code:org_t)

Av författaren/redakt...: Bjurshagen, Stef ...; Hellström, Jonas; Pasiskevicius, V ...; Pujol, Maria; Aguiló, Magdalen ...; Díaz, Francesc

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