Mateos Ferré, XavierGüell Vilà, FrankPujol Baigés, Maria CintaBursukova, M.Solé i Cartañá, Rosa Ma.Gavaldà, JosefinaAguiló Díaz, MagdalenaDíaz, Francesc (Díaz González)Massons, Jaume2013-02-082013-02-0820020003-6951https://hdl.handle.net/2445/33770We grew good-optical-quality KYb~WO4)2 single crystals doped with erbium ions by the top seeded solution growth slow cooling method. Optical absorption of erbium was performed at room temperature ~RT! and at 6 K. Green photoluminescence of erbium was achieved at RT and 6 K after selective excitation of ytterbium ions at 940 nm (10 638 cm21). The splitting of all found excited energy levels and the ground energy level of erbium in KYb~WO4)2 is presented derived from the accurate absorption and emission measurements, respectively. The lifetime of the Stokes and the anti-Stokes green emissions of erbium were measured after excitation at 488 nm (20 490 cm21) and 940 nm(10 638 cm21), respectively. We propose applying the up-conversion model to the observed green emission.3 p.application/pdfeng(c) American Institute of Physics , 2002Metalls de terres raresCristal·lografiaOptoelectrònicaLàsers d'estat sòlidRare earth metalsCrystallographyOptoelectronicsSolid-state lasersinfo:eu-repo/semantics/article5431222013-02-08info:eu-repo/semantics/openAccess