Autor segons l'article: X. MATEOS; P. LOIKO; S. Y. CHOI; F. ROTERMUND; J. M. SERRES; M. AGUILÓ; F. DÍAZ; K. YUMASHEV; U. GRIEBNER; V. PETROV
Departament: Química Física i Inorgànica
Autor/s de la URV: MATEOS FERRÉ, XAVIER; P. LOIKO; S. Y. CHOI; F. ROTERMUND; J. M. SERRES; AGUILÓ DÍAZ, MAGDALENA; DÍAZ GONZÁLEZ, FRANCISCO MANUEL; K. YUMASHEV; U. GRIEBNER; V. PETROV
Paraules clau: Single-walled carbon nanotubes (SWCN) Q switching carbon nanotubes
Resum: Efficient and power-scalable laser operation of a vibronic Tm3+:KLu(WO4)2 microchip laser at ∼2.13 μm is demonstrated. In the continuous-wave mode under diode pumping at ∼805 nm, this laser generated 1.17 W at 2109-2133 nm with a slope efficiency of 39%. This emission is related to the coupling of the electronic transitions of Tm3+ ions with the stretching vibrations of the WOW oxygen bonds in the monoclinic KLu(WO4)2 crystal host appearing at ∼379, 406, and 450 cm-1. The achieved emission wavelength is longer, to our knowledge, than any previously reported laser based on Tm3+ or Ho3+ doped double tungstate crystals. Passive Q-switching of the vibronic Tm3+:KLu(WO4)2 laser is realized with a single-walled carbon nanotube (SWCNT) based saturable absorber, representing the longest wavelength in this mode of operation. In this regime, the maximum output power reached 0.70 W at 2131 nm, corresponding to a slope efficiency of 29%. The pulse characteristics were 25 ns/1.1 μJ at the pulse repetition frequency of 0.62 MHz. These are, we believe, the shortest pulses ever achieved in any lanthanide-based laser passively Q-switched by carbon nanostructures. A conventional (purely electronic transition) Tm3+:KLu(WO4)2 microchip laser at 1.92 μm Q-switched by the same SWCNTs generated 40 ns/4.0 μJ pulses corresponding to a peak power of 0.1 kW, which is a record value for this type of laser oscillator, to our knowledge.
Grup de recerca: Física i Cristal·lografia de Nanomaterials Física i Cristal.lografia de Materials
Àrees temàtiques: Chemistry Química Química
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 0740-3224
Identificador de l'autor: 0000-0003-1940-1990; 0000-0002-4270-0668; n/a; n/a; 0000-0002-4299-538X; 0000-0001-6130-9579; 0000-0003-4581-4967; n/a; n/a; n/a
Data d'alta del registre: 2016-12-01
Pàgina final: D27
Volum de revista: 33
Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2016
Pàgina inicial: D19
Tipus de publicació: Article Artículo Article
Repositori URV