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Title: Green luminescence of Er3+ in stoichiometric KYb(WO4)2 single crystals
Author: Mateos Ferré, Xavier
Güell Vilà, Frank
Pujol Baigés, Maria Cinta
Bursukova, M.
Solé i Cartañá, Rosa Ma.
Gavaldà, Josefina
Aguiló Díaz, Magdalena
Díaz, Francesc (Díaz González)
Massons, Jaume
Keywords: Metalls de terres rares
Làsers d'estat sòlid
Rare earth metals
Solid-state lasers
Issue Date: 2002
Publisher: American Institute of Physics
Abstract: We 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.
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It is part of: Applied Physics Letters, 2002, vol. 80, num. 24, p. 4510-4512
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ISSN: 0003-6951
Appears in Collections:Articles publicats en revistes (Enginyeria Electrònica i Biomèdica)

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