Author, as appears in the article.: Xavier Mateos; Pavel Loiko; Josep Maria Serres; Konstantin Yumashev; Uwe Griebner; Valentin Petrov; Magdalena Aguiló; Francesc Díaz
Department: Química Física i Inorgànica
URV's Author/s: MATEOS FERRÉ, XAVIER; Pavel Loiko; Josep Maria Serres; Konstantin Yumashev; Uwe Griebner; Valentin Petrov; AGUILÓ DÍAZ, MAGDALENA; DÍAZ GONZÁLEZ, FRANCISCO MANUEL
Keywords: micro-lasers monoclinic double tungstates Solid-state lasers
Abstract: We demonstrate the suitability of monoclinic double tungstates (MDTs), KRE(WO4)2, where RE = Gd, Y or Lu, doped with Nd3+, Yb3+, Tm3+, or Ho3 + ions and co-doped with Yb3+-Tm3+, or Tm3+-Ho3+ ion couples, for highly efficientmicro-lasers at ¿1 ¿m and at ¿2 ¿m. This is facilitated by the use of high rare-earth doping levels (up to 15 at.% for Tm, 10 at.% for Nd, and 25 at.% for Yb) and a special crystal cut along the Ng-axis providing the thermal guiding. Record slope efficiencies for bulk MDT lasers are achieved for each studied ion. A 15 at.% Tm:KLu(WO4)2 laser generated 785 mW at 1957¿1965 nm with a slope efficiency ¿ = 77%. The quantum efficiency for Tm3+ ions amounted to ¿q = 1.98±0.02. With a 0.9 mm-thick 25 at.% Yb:KLuW micro-laser, ¿ = 91% is achieved, approaching the theoretical limit set by the Stokes shift.
Research group: Física i Cristal·lografia de Nanomaterials Física i Cristal.lografia de Materials
Thematic Areas: Chemistry Química Química
licence for use: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 0018-9197
Author identifier: 0000-0003-1940-1990; ; ; ; ; ; 0000-0001-6130-9579; 0000-0003-4581-4967
Record's date: 2017-05-24
Journal volume: 53
Papper version: info:eu-repo/semantics/acceptedVersion
Link to the original source: https://ieeexplore.ieee.org/document/7876836
Funding program: european; Marie Sk¿odowska-Curie; 657630 altres; ICREA academia; 2010ICREA-02 altres; Grups consolidats; 2014SGR1358 plan; Retos; TEC2014-55948-R plan; Retos; MAT2013-47395-C4-4-R plan; Retos; MAT2016-75716-C2-1-R
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Article's DOI: 10.1109/JQE.2017.2681626
Entity: Universitat Rovira i Virgili
Journal publication year: 2017
Publication Type: Article Artículo Article
Repositori URV