Author, as appears in the article.: Bolanos W., Carvajal J., Mateos X., Murugan G., Subramanian A., Wilkinson J., Cantelar E., Jaque D., Lifante G., Aguiló M., Díaz F.

Department: Química Física i Inorgànica

URV's Author/s: , / Aguiló Díaz, Magdalena / Carvajal Martí, Joan Josep / Mateos Ferré, Xavier

Abstract: Buried channel waveguides were fabricated by liquid phase epitaxial growth of a lattice-matched KY0.58Gd0.22Lu0.17Tm 0.03(WO4)2 film on a microstructured KY(WO 4)2 substrate. Channels were transferred to the substrates by standard photolithography and Ar-ion milling. The bottom and sidewalls of the milled channels were smooth enough (rms roughness = 70 nm and 20 nm, respectively) to favour the epitaxial growth of the active layer without defects at the boundary of substrate/epitaxial layer. The refractive index contrast was sufficient to enable light confinement and guided modes with low scattering losses were observed at wavelengths between 1440 nm and 1640 nm. CW laser operation at 1840 nm at room temperature was observed with feedback provided only by Fresnel reflection at the end faces, with slope efficiencies of 4% and 9% for TE and TM polarizations, respectively. © 2010 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 magdalena.aguilo@urv.cat joanjosep.carvajal@urv.cat

Author identifier: 0000-0003-4581-4967 0000-0003-1940-1990 0000-0001-6130-9579 0000-0002-4389-7298

Last page: 26945

Record's date: 2023-10-14

Journal volume: 18

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

Link to the original source: https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-18-26-26937&id=208691

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

Papper original source: Optics Express. 18 (26): 26937-26945

APA: Bolanos W., Carvajal J., Mateos X., Murugan G., Subramanian A., Wilkinson J., Cantelar E., Jaque D., Lifante G., Aguiló M., Díaz F. (2010). Mirrorless buried waveguide laser in monoclinic double tungstates fabricated by a novel combination of ion milling and liquid phase epitaxy. Optics Express, 18(26), 26937-26945. DOI: 10.1364/OE.18.026937

Article's DOI: 10.1364/OE.18.026937

Entity: Universitat Rovira i Virgili

Journal publication year: 2010

First page: 26937

Publication Type: Journal Publications