Autor segons l'article: Alles, Adrian; Pan, Zhongben; Loiko, Pavel; Serres, Josep Maria; Slimi, Sami; Yingming, Shawuti; Tang, Kaiyang; Wang, Yicheng; Zhao, Yongguang; Dunina, Elena; Kornienko, Alexey; Camy, Patrice; Chen, Weidong; Wang, Li; Griebner, Uwe; Petrov, Valentin; Sole, Rosa Maria; Aguilo, Magdalena; Diaz, Francesc; Mateos, Xavier
Departament: Química Física i Inorgànica
Autor/s de la URV: Aguiló Díaz, Magdalena / Alles Leal, Adrian / Díaz González, Francisco Manuel / Mateos Ferré, Xavier / Serres Serres, Josep Maria / Slimi, Sami / Solé Cartañà, Rosa Maria
Paraules clau: Ultrafast lasers; Transition probabilities; Tm3+; Tantalum; Spectroscopy; Spectral broadening; Rietveld analysis; Rare-earth ions; Random distribution; Pumping (laser); Positive ions; Niobium gallium; Lithium metallography; Lithium; Judd-ofelt theory; Intensity parameters; Intensities; High thermal conductivity; Growth; Generation; Garnets; Gallium; Femtosecond pulse generation; Electromagnetic pulse; Crystals; Crystal-field splitting; Charge compensation; Calcium; Absorption
Resum: We report on the development of a novel laser crystal with broadband emission properties at similar to 2 mu m - a Tm3+, Li+-codoped calcium tantalum gallium garnet (Tm:CLTGG). The crystal is grown by the Czochralski method. Its structure (cubic, sp. gr . la (3) over bard, a = 12.5158(0) angstrom) is refined by the Rietveld method. Tm:CLTGG exhibits a relatively high thermal conductivity of 4.33 Wm(-1) K-1. Raman spectroscopy confirms a weak concentration of vacancies due to the charge compensation provided by Li+ codoping. The transition probabilities of Tm3+ ions are determined using the modified Judd-Ofelt theory yielding the intensity parameters Omega(2) = 5.185, Omega(4) = 0.650, Omega(6) = 1.068 [10(-20) cm(2)] and alpha = 0.171 [10(-4) cm]. The crystal-field splitting of the Tm3+ multiplets is revealed at 10 K. The first diode-pumped Tm:CLTGG laser generates 1.08 W at similar to 2 mu m with a slope efficiency of 23.8%. The Tm3+ ions in CLTGG exhibit significant inhomogeneous spectral broadening due to the structure disorder (a random distribution of Ta5+ and Ga3+ cations over octahedral and tetrahedral lattice sites) leading to smooth and broad gain profiles (bandwidth: 130 nm) extending well above 2 mu m and rendering Tm:CLTGG suitable for femtosecond pulse generation. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Àrees temàtiques: Química; Optics; Materials science, multidisciplinary; Materiais; Interdisciplinar; Engenharias iv; Engenharias iii; Engenharias ii; Electronic, optical and magnetic materials; Biotecnología; Astronomia / física
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: josepmaria.serres@urv.cat; adrian.alles@estudiants.urv.cat; sami.slimi@estudiants.urv.cat; sami.slimi@estudiants.urv.cat; magdalena.aguilo@urv.cat; rosam.sole@urv.cat; xavier.mateos@urv.cat; f.diaz@urv.cat
Data d'alta del registre: 2025-01-08
Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
Enllaç font original: https://opg.optica.org/ome/fulltext.cfm?uri=ome-11-9-2938&id=456093
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Optical Materials Express. 11 (9): 2938-2951
Referència de l'ítem segons les normes APA: Alles, Adrian; Pan, Zhongben; Loiko, Pavel; Serres, Josep Maria; Slimi, Sami; Yingming, Shawuti; Tang, Kaiyang; Wang, Yicheng; Zhao, Yongguang; Dunina (2021). Tm3+-doped calcium lithium tantalum gallium garnet (Tm:CLTGG): novel laser crystal. Optical Materials Express, 11(9), 2938-2951. DOI: 10.1364/OME.435238
DOI de l'article: 10.1364/OME.435238
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2021
Tipus de publicació: Journal Publications
Repositori URV