Erbium spectroscopy and 1.5-micrometre emission in KGd(WO4)2: Er,Yb single crystals

We grew good-optical-quality KGd(WO/sub 4/)/sub 2/ single crystals doped with erbium and ytterbium ions at several concentrations of dopants using the top-seeded-solution growth slow-cooling method (TSSG). We performed the spectroscopic characterization of this material related to the 1.5-mm infrare...

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Detalles Bibliográficos
Autores: Mateos Ferré, Xavier, Pujol Baigés, Maria Cinta, Güell Vilà, Frank, Galan Valiente, Miguel, Solé i Cartañá, Rosa Ma., Gavaldà, Josefina, Aguiló Díaz, Magdalena, Massons, Jaume, Díaz, Francesc (Díaz González)
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2004
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/8756
Acceso en línea:https://hdl.handle.net/2445/8756
Access Level:acceso abierto
Palabra clave:Làsers d'estat sòlid
Espectroscòpia
Materials òptics
Polarització (Llum)
Solid-state lasers
Spectroscopy
Polarization (Light)
Optical materials
Descripción
Sumario:We grew good-optical-quality KGd(WO/sub 4/)/sub 2/ single crystals doped with erbium and ytterbium ions at several concentrations of dopants using the top-seeded-solution growth slow-cooling method (TSSG). We performed the spectroscopic characterization of this material related to the 1.5-mm infrared emission of erbium which is interesting for laser applications. To do this, we carried out polarized optical absorption at room temperature (RT) and at low temperature (6 K) and performed luminescence studies of the emission and lifetime. We obtained the 1.5-mm emission of erbium after selective laser pump excitation of the ytterbium ion and energy transfer between the two ions. The maximum emission cross section for 1.5 mm was about 2.56/spl times/10/sup -20/ cm/sup 2/ for the polarization of light with the electric field parallel to the N/sub m/ principal optical direction. This value was higher than for other erbium-doped materials with application in solid-state lasers such as LiYF/sub 4/:Er(YLF:Er), Y/sub 3/Al/sub 5/O/sub 12/:Er(YAG:Er), YAlO/sub 3/:Er, and Al/sub 2/O/sub 3/:Er.

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