Author, as appears in the article.: Loiko, Pavel; Serres, Josep Maria; Mateos, Xavier; Tacchini, Simone; Tonelli, Mauro; Veronesi, Stefano; Parisi, Daniela; Di Lieto, Alberto; Yumashev, Konstantin; Griebner, Uwe; Petrov, Valentin;
Department: Química Física i Inorgànica
URV's Author/s: Mateos Ferré, Xavier / Serres Serres, Josep Maria
Keywords: Yag Wave Up-conversion Tm Power Nd-ylf Microprocessor chips Linearly polarized laser threshold
Abstract: We report on a detailed comparative study of the spectroscopic and thermo-optic properties of tetragonal Tm:LiLnF(4) (Ln = Y, Gd, and Lu) crystals indicating their suitability for highly-efficient microchip lasers diode-pumped at similar to 791 nm and operating at similar to 1.91 mu m. An a-cut 8 at.% Tm:LiYF4 micro-laser generated 3.1 W of linearly polarized output at 1904 nm with a slope efficiency of eta = 72% and a laser threshold of only 0.24 W. The internal loss for this crystal is as low as 0.0011 cm(-1). For 8 at.% Tm:LiGdF4 and 12 at.% Tm:LiLuF4 lasers, the output power reached similar to 2 W and eta was 65% and 52%, respectively. The thermal lens in all Tm:LiLnF(4) crystals is weak, positive and low-astigmatic. The potential for the Tm:LiLnF(4) lasers to operate beyond similar to 2 mu m due to a vibronic coupling has been proved. The Tm:LiYF4 vibronic laser generated 375 mW at 2026-2044 nm with. = 31%. The Tm:LiLnF(4) crystals are very promising for passively Q-switched microchip lasers. (C) 2017 Optical Society of America
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/
Author's mail: josepmaria.serres@urv.cat xavier.mateos@urv.cat
Author identifier: 0000-0002-4299-538X 0000-0003-1940-1990
Record's date: 2024-09-07
Papper version: info:eu-repo/semantics/publishedVersion
Link to the original source: https://opg.optica.org/ome/fulltext.cfm?uri=ome-7-3-844&id=360004
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Optical Materials Express. 7 (3): 844-854
APA: Loiko, Pavel; Serres, Josep Maria; Mateos, Xavier; Tacchini, Simone; Tonelli, Mauro; Veronesi, Stefano; Parisi, Daniela; Di Lieto, Alberto; Yumashev, (2017). Comparative spectroscopic and thermo-optic study of Tm:LiLnF(4) (Ln = Y, Gd, and Lu) crystals for highly-efficient microchip lasers at similar to 2 mu m. Optical Materials Express, 7(3), 844-854. DOI: 10.1364/OME.7.000844
Article's DOI: 10.1364/OME.7.000844
Entity: Universitat Rovira i Virgili
Journal publication year: 2017
Publication Type: Journal Publications
Repositori URV