Reactive sintering of coaxial Yb3+:YAG/YAG transparent ceramics

15 at.% Yb3+:YAG/YAG transparent composite ceramics with a coaxial geometry were synthesized by a ceramic forming method combined with the reactive sintering at 1800 °C. Densification peculiarities, microstructure, optical properties, and laser characteristics of composite ceramic samples were studi...

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Bibliographic Details
Published in:Optical materials 2024-10, Vol.156, p.115970, Article 115970
Main Authors: Parkhomenko, S.V., Matvienko, O.O., Vorona, I.O., Doroshenko, A.G., Kryzhanovska, O.S., Safronova, N.A., Mateychenko, P.V., Tolmachev, А.V., Kuncser, A., Croitoru, G., Yavetskiy, R.P.
Format: Article
Language:English
Subjects:
Composite ceramics
Laser efficiency
Microstructure
Optical properties
Reactive sintering
Yb3+:YAG
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Summary:15 at.% Yb3+:YAG/YAG transparent composite ceramics with a coaxial geometry were synthesized by a ceramic forming method combined with the reactive sintering at 1800 °C. Densification peculiarities, microstructure, optical properties, and laser characteristics of composite ceramic samples were studied. Powder mixtures of Yb3+:YAG and YAG stoichiometric compositions demonstrate almost the same densification enabling uniform shrinkage of composite without differential sintering. It was shown that in-line optical transmittance of 15 at.% Yb3+:YAG/YAG composite ceramics reaches 80 % at 1030 nm wavelength. The effective diffusion coefficient of Yb3+ ions in garnet structure has been determined. Efficient laser emission was generated from Yb3+:YAG/YAG composite ceramics with a slope efficiency of ηsa = 0.30. •Yb:YAG/YAG composite ceramics were obtained by ceramic forming and reactive sintering.•Yb:YAG, YAG powder mixtures demonstrate identical densification behavior.•Effective diffusion coefficient of Yb3+ in YAG was determined (D = 0.88 × 10−16 m2/s).•Yb:YAG/YAG ceramics demonstrate laser emission with slope efficiency of 30 %.
ISSN:0925-3467
DOI:10.1016/j.optmat.2024.115970