Author, as appears in the article.: Mateos, X. ; Kifle, E; Loiko, P; Rodríguez, J. ; Ródenas, A. ; Griebner, U.; Petrov, V.; Aguiló, M. ; Díaz, F.

Department: Química Física i Inorgànica

URV's Author/s: MATEOS FERRÉ, XAVIER; Kifle, E; Loiko, P; Rodríguez, J. ; Ródenas, A. ; Griebner, U.; Petrov, V.; AGUILÓ DÍAZ, MAGDALENA; DÍAZ GONZÁLEZ, FRANCISCO MANUEL

Keywords: Laser materials Spectroscopy Waveguides

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.

Research group: Física i Cristal.lografia de Materials Física i Cristal·lografia de Nanomaterials

Thematic Areas: Química Química Chemistry

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

ISSN: 2159-3930

Author identifier: 0000-0003-1940-1990; ; ; ; ; ; ; 0000-0001-6130-9579; 0000-0003-4581-4967

Record's date: 2018-02-22

Last page: 4268

Journal volume: 7

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

Link to the original source: https://www.osapublishing.org/ome/abstract.cfm?uri=ome-7-12-4258

Funding program: altres; AGAUR Grants; 2016FI_B00844 altres; AGAUR Grants; 2017FI_B100158 altres; Icrea Academia; 2010ICREA-02 european; Marie Sk¿odowska-Curie; 657630 european; Marie Sk¿odowska-Curie; 747055 altres; ITMO Post-Doctoral Fellowship; 074-U01

Article's DOI: 10.1364/OME.7.004258

Entity: Universitat Rovira i Virgili

Journal publication year: 2017

First page: 4258

Publication Type: Article Artículo Article