Author, as appears in the article.: Kifle E., Loiko P., Mateos X., De Aldana J., Ródenas A., Griebner U., Petrov V., Aguiló M., Díaz F.
Department: Química Física i Inorgànica
URV's Author/s: Aguiló Díaz, Magdalena / Díaz González, Francisco Manuel / Mateos Ferré, Xavier / RODENAS SEGUI, AIRAN
Keywords: Waveguides Spectroscopy Lasers materials Laser materials
Abstract: We report on the fabrication, ¿-Raman characterization, and continuous-wave laser operation of a channel waveguide with a hexagonal optical-lattice-like cladding fabricated in monoclinic Tm:KLu(WO4)2 crystal by femtosecond direct laser writing. ¿-Raman spectroscopy indicates preservation of the crystalline quality in the core region and an anisotropic residual stress field. When pumped by a Ti:Sapphire laser at 802 nm, the Tm:KLu(WO4)2 buried channel waveguide laser generated 136 mW at 1843.7 nm with a slope efficiency of 34.2% and a threshold as low as 21 mW, which are the record characteristics for femtosecond-laser-written Tm crystalline waveguide lasers. The variation of the output coupling resulted in discrete wavelength tuning of the laser emission from 1785 to 1862 nm. The propagation losses in the waveguide are ~1.2 ± 0.3 dB/cm.
Thematic Areas: Química Optics Materials science, multidisciplinary Materiais Interdisciplinar Engenharias iv Engenharias iii Engenharias ii Electronic, optical and magnetic materials Biotecnología Astronomia / física
licence for use: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 21593930
Author's mail: magdalena.aguilo@urv.cat xavier.mateos@urv.cat f.diaz@urv.cat
Author identifier: 0000-0001-6130-9579 0000-0003-1940-1990 0000-0003-4581-4967
Record's date: 2024-09-07
Papper version: info:eu-repo/semantics/publishedVersion
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Optical Materials Express. 7 (12): 4258-4268
APA: Kifle E., Loiko P., Mateos X., De Aldana J., Ródenas A., Griebner U., Petrov V., Aguiló M., Díaz F. (2017). Femtosecond-laser-written hexagonal cladding waveguide in Tm: KLu(WO4)(2): mu-Raman study and laser operation. Optical Materials Express, 7(12), 4258-4268. DOI: 10.1364/OME.7.004258
Entity: Universitat Rovira i Virgili
Journal publication year: 2017
Publication Type: Journal Publications
Repositori URV