Author, as appears in the article.: Parreu I; Piyol M; Aguiló M; Díaz F; Mateos X; Petrov V

Department: Química Física i Inorgànica

URV's Author/s: , / Aguiló Díaz, Magdalena / Mateos Ferré, Xavier / Parreu Alberich, Isabel / Pujol Baiges, Maria Cinta

Abstract: Macrodefect-free single crystals of Yb-doped KGd(PO3) 4, a noncentrosymmetric laser host which possesses second-order nonlinear susceptibility, were grown using the top seeded solution growth slow-cooling (TSSG-SC) technique, reaching a maximum ytterbium concentration in the crystal of ≈3.2×1020 at/cm3. In order to evaluate the potential for self-frequency doubling, the dispersion of the refractive indices of KGd(PO3)4 was studied and Sellmeier equations were constructed which are valid in the visible and near-infrared. The Stark splitting of the two electronic states of ytterbium was determined from absorption and emission measurements at room and low temperatures, and this allowed to compute the emission cross sections at room temperature. The fluorescence decay time is quite long, 1.22±0.01 ms. Laser generation in the 1 μm range is demonstrated with this new Yb host for the first time. Although the maximum output power achieved, of the order of 100 mW, was limited by the available crystal size and doping level, the more than 55% slope efficiency obtained with this first sample is rather promising for the future. © 2007 Optical Society of America.

Thematic Areas: Química Optics Odontología Medicina iii Medicina ii Materiais Matemática / probabilidade e estatística Interdisciplinar Engenharias iv Engenharias iii Engenharias ii Ciências biológicas i Ciências agrárias i Ciência da computação Biotecnología Atomic and molecular physics, and optics Astronomia / física

licence for use: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 1094-4087

Author's mail: f.diaz@urv.cat xavier.mateos@urv.cat mariacinta.pujol@urv.cat isabel.parreu@fundacio.urv.cat magdalena.aguilo@urv.cat

Author identifier: 0000-0003-4581-4967 0000-0003-1940-1990 0000-0002-1052-8031 0000-0001-6130-9579

Last page: 2368

Record's date: 2023-10-14

Journal volume: 15

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-15-5-2360&id=130591

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Optics Express. 15 (5): 2360-2368

APA: Parreu I; Piyol M; Aguiló M; Díaz F; Mateos X; Petrov V (2007). Growth, spectroscopy and laser operation of Yb:KGd(PO3) 4 single crystals. Optics Express, 15(5), 2360-2368. DOI: 10.1364/OE.15.002360

Article's DOI: 10.1364/OE.15.002360

Entity: Universitat Rovira i Virgili

Journal publication year: 2007

First page: 2360

Publication Type: Journal Publications