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Fabrication and laser operation of Yb:Lu 2 O 3 transparent ceramics from co‐precipitated nano‐powders
Author(s) -
Liu Ziyu,
Toci Guido,
Pirri Angela,
Patrizi Barbara,
Li Jinbang,
Hu Zewang,
Wei Jiabei,
Pan Hongming,
Xie Tengfei,
Vannini Matteo,
Li Jiang
Publication year - 2019
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.16674
Subject(s) - transparent ceramics , materials science , hot isostatic pressing , calcination , ceramic , transmittance , sintering , fabrication , opacity , nano , mineralogy , carbonate , analytical chemistry (journal) , metallurgy , composite material , optics , optoelectronics , catalysis , chemistry , biochemistry , chromatography , medicine , alternative medicine , physics , pathology
In this article, 5 at.% Yb:Lu 2 O 3 transparent ceramics were fabricated by vacuum sintering combined with hot isostatic pressing (HIP) posttreatment using co‐precipitated nano‐powders. The influence of precipitant molar ratio, ammonium hydrogen carbonate, to metal ions (AHC/M 3+ , R value) on the properties of Yb:Lu 2 O 3 precursors and calcined powders was investigated systematically. It was found that the powders with different R value calcined at 1100°C for 4 hours were pure cubic Lu 2 O 3 but the morphologies of precursors and powders behaved differently. The opaque samples pre‐sintered at 1500°C for 2 hours grew into transparent ceramics after HIP posttreatment at 1750°C for 1 hour. The final ceramic with R = 4.8 showed the best optical quality with the in‐line transmittance of 79.7% at 1100 nm. The quasi‐CW laser operation was performed at 1034 nm and 1080 nm with a maximum output power up to 8.15 W as well as a corresponding slope efficiency of 58.4%.