Hot pressing of Yb:Y2O3 laser ceramics with LiF sintering aid

Effect of sintering additives on the densification and dielectric properties of Sr0.5Ba0.5Nb2O6 ceramics synthesized by a soft-chemistry method

“…LiF is used as a common sintering additive for various ceramic materials [30][31][32][33][34], therefore we tested LiF to reduce the sintering temperature of Sr 0.5 Ba 0.5 Nb 2 O 6 . Additions of 76 mol% (¼ 5 wt%) LiF to Sr 0.5 Ba 0.5 Nb 2 O 6 leads to an enhanced densification at low sintering temperatures with relative densities of 80 (1) and 82(1) % after sintering at 1050 C and 1150 C, whereas at 1200 C a reduction to 77(1) % was observed.…”

ZnO – Yb2O3 composite optical ceramics: Synthesis, structure and spectral-luminescent properties

“…It was 8.7 μs for the 1 wt% Yb doped ceramic and 15.6 μs for the 2 wt% Yb doped one. The radiative lifetime of Yb 3+ ions in Y2O3 τrad is 0.89 ms [80]. With increasing the Yb doping level up to 100 at% (Yb2O3, the stoichiometric composition), the luminescence lifetime is expected to be notably shortened owing to the strong energy transfer to defects and impurities.…”

Fabrication of high‐efficiency Yb:Y2O3 laser ceramics without photodarkening

“…fabricated high‐quality Yb:Y 2 O 3 ceramics with LiF as the sintering additive. The maximum output power of 735 mW, with the optical‐to‐optical efficiency of 26.2%, was achieved from the Yb:Y 2 O 3 transparent ceramics 15 …”

“…The maximum output power of 735 mW, with the optical-to-optical efficiency of 26.2%, was achieved from the Yb:Y 2 O 3 transparent ceramics. 15 In order to obtain highly transparent sesquioxide ceramics, various bivalent or tetravalent ions were used as sintering aids to control the grain growth in the sintering process. Among them, ZrO 2 has been proven as an effective one and has been widely used.…”