Author, as appears in the article.: Mateos, Xavier; Loiko, Pavel; Serres, Josep Maria; Yumashev, Konstantin; Griebner, Uwe; Petrov, Valentin; Aguilo, Magdalena; Diaz, Francesc
Department: Química Física i Inorgànica
URV's Author/s: Aguiló Díaz, Magdalena / Díaz González, Francisco Manuel / Mateos Ferré, Xavier / Serres Serres, Josep Maria
Keywords: Ytterbium Yb Tm3+ Tm Thulium Spectroscopy Solid-state lasers Power Operation Nd Monoclinic double tungstates Micro-lasers Klu(wo4)(2) Ho Energy-transfer Emission Crystal-growth
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 efficient micro-lasers at similar to 1 mu m and at similar to 2 mu 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 eta = 77%. The quantum efficiency for Tm3+ ions amounted to eta(q) = 1.98+/-0.02. With a 0.9 mm-thick 25 at.% Yb: KLuW micro-laser, eta = 91% is achieved,
Thematic Areas: Quantum science & technology Physics, applied Optics Odontología Materiais Matemática / probabilidade e estatística Engineering, electrical & electronic Engenharias iv Engenharias iii Engenharias ii Electrical and electronic engineering Condensed matter physics Biodiversidade Atomic and molecular physics, and optics Astronomia / física
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: josepmaria.serres@urv.cat magdalena.aguilo@urv.cat xavier.mateos@urv.cat f.diaz@urv.cat
Author identifier: 0000-0002-4299-538X 0000-0001-6130-9579 0000-0003-1940-1990 0000-0003-4581-4967
Record's date: 2024-10-19
Papper version: info:eu-repo/semantics/acceptedVersion
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Ieee Journal Of Quantum Electronics. 53 (3): 1700110-
APA: Mateos, Xavier; Loiko, Pavel; Serres, Josep Maria; Yumashev, Konstantin; Griebner, Uwe; Petrov, Valentin; Aguilo, Magdalena; Diaz, Francesc (2017). Efficient Micro-Lasers Based on Highly Doped Monoclinic Double Tungstates. Ieee Journal Of Quantum Electronics, 53(3), 1700110-. DOI: 10.1109/JQE.2017.2681626
Entity: Universitat Rovira i Virgili
Journal publication year: 2017
Publication Type: Journal Publications
Repositori URV