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Green luminescence of Er3+ in stoichiometric KYb(WO4)2 single crystals

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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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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. Green luminescence of Er3+ in stoichiometric KYb(WO4)2 single crystals. _Applied Physics Letters_. 2002. Vol. 80, núm. 24, pàgs. 4510-4512. [consulta: 20 de gener de 2026]. ISSN: 0003-6951. [Disponible a: https://hdl.handle.net/2445/33770]

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