Fabrication and laser performances of Yb:Sc2O3 transparent ceramics from different combination of vacuum sintering and hot isostatic pressing conditions
Authors: Toci G., Hostasa J., Patrizi B., Biasini V., Pirri A., Piancastelli A., Vannini M.
Autors Affiliation: CNR INO, Via Madonna Piano 10 C, I-50019 Sesto Fiorentino, FI, Italy; CNR ISTEC, Inst Sci & Technol Ceram, Via Granarolo 64, I-48018 Faenza, RA, Italy; CNR IFAC Ist Fis Applicata Carrara, Via Madonna Piano 10C, I-50019 Sesto Fiorentino, FI, Italy
Abstract: In this paper we report on the preparation and laser performance of transparent 3aL% Yb:Sc2O3 ceramics by reactive sintering of commercially available powders under vacuum followed by hot isostatic pressing (HIP). Combinations of different vacuum sintering temperatures (1650 degrees C and 1750 degrees C) and different HIP treatments (1700 degrees C and 1800 degrees C at 200 MPa) were tested in order to understand how these steps influence the microstructure and thus the optical and lasing properties of the ceramic samples. All the samples showed a good optical quality. The microstructure analysis and the laser tests showed that the vacuum pre-sintering temperature is the key factor determining the quality of the samples and the laser performances. The best values of slope efficiency i.e. eta(L) = 50 % and output power i.e. P-out = 6.62 W were obtained for the sample pre-sintered under vacuum at 1650 degrees C and hot isostatically pressed at 1800 degrees C.
Journal/Review: JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume: 40 (3) Pages from: 881 to: 886
KeyWords: Hot isostatic pressing; Laser ceramics; Yb-doped sesquioxides laser ceramicsDOI: 10.1016/j.jeurceramsoc.2019.10.059Citations: 2data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2020-07-05References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here