Author, as appears in the article.: Baillard A; Bae JE; Ceballos M; Loiko P; Solé RM; Aguiló M; Díaz F; Brasse G; Mateos X; Camy P
Department: Química Física i Inorgànica
URV's Author/s: Aguiló Díaz, Magdalena / Díaz González, Francisco Manuel / Mateos Ferré, Xavier / Solé Cartañà, Rosa Maria
Abstract: We report on the first deep-red europium planar waveguide laser. It employs 30-µm thick heavily-doped 11.5 at.% Eu:KY(WO4)2 layers grown by liquid phase epitaxy on undoped substrates using K2W2O7 as a solvent. When pumped with a green laser at 532 nm, the Eu-waveguide laser delivers a maximum output power of 7 mW at 704.7 nm with a slope efficiency of 9.5%, a laser threshold of 21 mW, and linear polarization. The waveguide propagation losses are as low as 0.05 dB/cm. The morphology, vibronic, and spectroscopic properties of the epitaxial layers are also studied. In the deep red, for the 5D0 → 7F4 transition, the stimulated-emission cross-section reaches 1.76 × 10−20 cm2 at 704.7 nm for light polarization E || Np, and the luminescence lifetime of the 5D0 manifold is 472 µs.
Thematic Areas: Astronomia / física Atomic and molecular physics, and optics Biotecnología Ciência da computação Ciências agrárias i Ciências biológicas i Engenharias ii Engenharias iii Engenharias iv Interdisciplinar Matemática / probabilidade e estatística Materiais Medicina ii Medicina iii Odontología Optics Química
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: f.diaz@urv.cat xavier.mateos@urv.cat rosam.sole@urv.cat magdalena.aguilo@urv.cat
Author identifier: 0000-0003-4581-4967 0000-0003-1940-1990 0000-0002-5769-4141 0000-0001-6130-9579
Record's date: 2025-03-08
Paper version: info:eu-repo/semantics/publishedVersion
Paper original source: Optics Express. 33 (3): 4926-4939
APA: Baillard A; Bae JE; Ceballos M; Loiko P; Solé RM; Aguiló M; Díaz F; Brasse G; Mateos X; Camy P (2025). Deep-red planar waveguide laser operation of Eu3+:KY(WO4)2 layers. Optics Express, 33(3), 4926-4939. DOI: 10.1364/OE.537598
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Entity: Universitat Rovira i Virgili
Journal publication year: 2025
Publication Type: Journal Publications
Repositori URV