Author, as appears in the article.: X. Mateos; P.A. Loiko; E.V. Vilejshikova; J.M. Serres; V.I. Dashkevich; V.A. Orlovich; A.S. Yasukevich; N.V. Kuleshov; K.V. Yumashev; S.V. Grigoriev; S.M. Vatnik; S.N. Bagaev; A.A. Pavlyuk
Department: Química Física i Inorgànica
URV's Author/s: MATEOS FERRÉ, XAVIER; P.A. Loiko; E.V. Vilejshikova; J.M. Serres; V.I. Dashkevich; V.A. Orlovich; A.S. Yasukevich; N.V. Kuleshov; K.V. Yumashev; S.V. Grigoriev; S.M. Vatnik; S.N. Bagaev; A.A. Pavlyuk
Keywords: Double tungstates Europium luminescence
Abstract: We report on growth and detailed spectroscopic study of Eu3þ-doped tetragonal sodium gadolinium double tungstate, Eu:NaGd(WO4)2, a new promising crystal for deep-red lasers. Large-volume crystal doped with 4.9 at.% Eu is grown by Czochralski method along the [001] crystallographic direction. Absorption of Eu3þ ions is studied at room temperature (RT) and at 6 K. For the absorption band related to the 7F1 / 5D1 transition suitable for pumping of Eu:NaGd(WO4)2, the maximum cross-section is sabs ¼ 1.2 1021 cm2 at 535.5 nm with the full width at half maximum (FWHM) of 3.1 nm (at RT, for E jj a polarization). For the 5D0 / 7F4 transition, the maximum stimulated-emission cross-section is sSE ¼ 1.6 1021 cm2 at 698.3 nm (RT, E jj c polarization). Lifetime of the 5D0 state is 490 ± 10 ms (at RT). Under UV excitation, Eu:NaGd(WO4)2 provides intense red emission with CIE coordinates (x ¼ 0.671, y ¼ 0.329).
Research group: Física i Cristal.lografia de Materials
Thematic Areas: Química Química Chemistry
licence for use: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 0925-3467
Author identifier: 0000-0003-1940-1990; ; ; ; ; ; ; ; ; ; ; ;
Record's date: 2017-06-12
Last page: 7
Journal volume: 57
Papper version: info:eu-repo/semantics/acceptedVersion
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Entity: Universitat Rovira i Virgili
Journal publication year: 2016
First page: 1
Publication Type: Article Artículo Article
Repositori URV