Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/111733
Title: Comparative study of Yb:Lu3Al5O12 and Yb:Lu2O3 laser Ceramics Produced from Laser-Ablated Nanopowders
Authors: Basyrova, L.
Loiko, P.
Maksimov, R.
Shitov, V.
Serres, J. M.
Griebner, U.
Petrov, V.
Aguiló, M.
Díaz, F.
Mateos, X.
Issue Date: 2021
Publisher: Elsevier Ltd
Elsevier BV
Citation: Comparative study of Yb:Lu3Al5O12 and Yb:Lu2O3 laser Ceramics Produced from Laser-Ablated Nanopowders / L. Basyrova, P. Loiko, R. Maksimov et al. // Ceramics International. — 2021. — Vol. 47. — Iss. 5. — P. 6633-6642.
Abstract: We present a comparative study of two Lu-based oxide ceramics doped with Yb3+ ions, namely Yb:Lu3Al5O12 (garnet) and Yb:Lu2O3 (sesquioxide), promising for thin-disk lasers. The ceramics are fabricated using nanopowders of 3.6 at.% Yb:Lu2O3 and Al2O3 produced by laser ablation: Yb:Lu3Al5O12 – by vacuum sintering at 1800 °C for 5 h with the addition of 1 wt% TEOS as a sintering aid, and Yb:Lu2O3 – by vacuum pre-sintering at 1250 °C for 2 h followed by Hot Isostatic Pressing at 1400 °C for 2 h under Ar gas pressure of 207 MPa. The comparison includes the structure, Raman spectra, transmission, optical spectroscopy and laser operation. The crystal-field splitting of Yb3+ multiplets is revealed for Lu3Al5O12. A continuous-wave (CW) Yb:Lu3Al5O12 ceramic microchip laser generates 5.65 W at 1031.1 nm with a slope efficiency of 67.2%. In the quasi-CW regime, the peak power is scaled up to 8.83 W. The power scaling for the Yb:Lu2O3 ceramic laser is limited by losses originating from residual coloration and inferior thermal behavior. © 2020 Elsevier Ltd and Techna Group S.r.l.
Keywords: GARNETS
LASER OPERATION
OPTICAL CERAMICS
SESQUIOXIDES
ALUMINA
ALUMINUM OXIDE
ARGON LASERS
HOT ISOSTATIC PRESSING
LASER ABLATION
LIGHT TRANSMISSION
LUTETIUM COMPOUNDS
NANOSTRUCTURED MATERIALS
SINTERING
CERAMIC MICROCHIP LASERS
COMPARATIVE STUDIES
CONTINUOUS WAVES
CRYSTAL-FIELD SPLITTING
LASER OPERATIONS
OPTICAL SPECTROSCOPY
SLOPE EFFICIENCIES
THERMAL BEHAVIORS
YTTERBIUM COMPOUNDS
URI: http://hdl.handle.net/10995/111733
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85096098651
PURE ID: 20888630
ISSN: 0272-8842
metadata.dc.description.sponsorship: This work was supported by the Spanish Government (project No. MAT2016-75716-C2-1-R ( AEI / FEDER, UE)); Generalitat de Catalunya (project No. 2017SGR755 ); Government of the Russian Federation (state task project No. 0389-2016-0002 (2018–2020)); RFBR (Grant No. 19-03-00855). The authors gratefully acknowledge Vyacheslav V. Platonov and Egor V. Tikhonov from IEP UrB RAS for providing Yb:Lu 2 O 3 and Al 2 O 3 nanopowders. L. B. thanks Mikhail Baranov from ITMO University for the help with the SEM studies.
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