Author, as appears in the article.: Loiko P; Serres JM; Mateos X; Xu X; Xu J; Jambunathan V; Navratil P; Lucianetti A; Mocek T; Zhang X; Griebner U; Petrov V; Aguiló M; Díaz F; Major A

Department: Química Física i Inorgànica

URV's Author/s: , / Aguiló Díaz, Magdalena / Mateos Ferré, Xavier / Serres Serres, Josep Maria

Keywords: @infoAeu @residentesaeu @uroweb Etiqueta «#» Hashtag

Abstract: © 2017 Optical Society of America. Multi-watt continuous-wave (CW) operation of tetragonal rare-earth calcium aluminate Yb:CaLnAlO 4 Ln Gd;Y) crystals in plano–plano microchip lasers was demonstrated with an almost quantum-defect-limited slope efficiency. Pumped at 978 nm by an InGaAs laser diode, a 3.4 mm long 8 at. % Yb:CaGdAlO 4 laser generated 7.79 W at 1057–1065 nm with a slope efficiency of ? 84% (with respect to the absorbed pump power). An even higher ? 91% was achieved with a 2.5 mm long 3 at. % Yb:CaYAlO 4 laser, from which 5.06 W were extracted at 1048–1056 nm. Both lasers produced linearly polarized output (?-polarization) with an almost circular diffraction-limited beam (M 2 x,y < 1.1). The output performance of the developed lasers was modeled, yielding an internal loss coefficient as low as 0.004?0.007 cm ?1 . In addition, their spectroscopic properties were revisited.

Thematic Areas: Química Optics Odontología Medicina ii Medicina i Materiais Matemática / probabilidade e estatística Interdisciplinar General medicine Engenharias iv Engenharias iii Engenharias ii Ciências ambientais Atomic and molecular physics, and optics Astronomia / física

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

ISSN: 01469592

Author's mail: josepmaria.serres@urv.cat f.diaz@urv.cat xavier.mateos@urv.cat magdalena.aguilo@urv.cat

Author identifier: 0000-0002-4299-538X 0000-0003-4581-4967 0000-0003-1940-1990 0000-0001-6130-9579

Record's date: 2023-10-14

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

Link to the original source: https://www.osapublishing.org/ol/abstract.cfm?uri=ol-42-13-2431

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

Papper original source: Optics Letters. 42 (13): 2431-2434

APA: Loiko P; Serres JM; Mateos X; Xu X; Xu J; Jambunathan V; Navratil P; Lucianetti A; Mocek T; Zhang X; Griebner U; Petrov V; Aguiló M; Díaz F; Major A (2017). Microchip Yb:CaLnAlO4lasers with up to 91% slope efficiency. Optics Letters, 42(13), 2431-2434. DOI: 10.1364/OL.42.002431

Article's DOI: 10.1364/OL.42.002431

Entity: Universitat Rovira i Virgili

Journal publication year: 2017

Publication Type: Journal Publications