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Proceedings Paper

Microstructure, absorption and luminescence of Co2+:ZnAl2O4 transparent ceramics: effect of the sintering additive
Author(s): Alexander Belyaev; Liza Basyrova; Maxim Lelet; Stanislav Balabanov; Mikhail Baranov; Olga Dymshits; Pavel Loiko
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Paper Abstract

Transparent ceramics of cobalt-doped zinc aluminium spinel (gahnite), Co2+:ZnA2O4, are synthesized by hot pressing at 1520 °C for 4 h in the presence of zinc fluoride, ZnF2, as a sintering additive. The effect of the ZnF2 content (3–10 wt%) on the microstructure, Raman spectra, optical absorption and luminescence of ceramics is studied. The ceramics feature clean grain boundaries, the absence of pores and a narrow grain size distribution (mean grain size: 70-100 μm) resulting in high in-line transparency close to the theoretical limit. The obtained ceramics are suitable for fabrication of saturable absorbers of erbium lasers.

Paper Details

Date Published: 1 April 2020
PDF: 6 pages
Proc. SPIE 11357, Fiber Lasers and Glass Photonics: Materials through Applications II, 113570E (1 April 2020);
Show Author Affiliations
Alexander Belyaev, G. G. Devyatykh Institute of Chemistry of High-Purity Substances (Russian Federation)
Liza Basyrova, ITMO Univ. (Russian Federation)
Maxim Lelet, Lobachevsky State Univ. of Nizhny Novgorod (Russian Federation)
Stanislav Balabanov, G. G. Devyatykh Institute of Chemistry of High-Purity Substances (Russian Federation)
Mikhail Baranov, ITMO Univ. (Russian Federation)
Olga Dymshits, Vavilov State Optical Institute (Russian Federation)
Pavel Loiko, CIMAP, CEA-CNRS-ENSICAEN, Univ. de Caen Normandie (France)


Published in SPIE Proceedings Vol. 11357:
Fiber Lasers and Glass Photonics: Materials through Applications II
Maurizio Ferrari; Jacob I. Mackenzie; Stefano Taccheo, Editor(s)

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