KEYWORDS: Ceramics, Absorption, FT-IR spectroscopy, YAG lasers, Crystals, Transparency, Solid state lasers, Transmittance, High power lasers, Laser systems engineering
Transparent sesquioxide ceramics, e.g. Y2O3 and Sc2O3 are being developed as alternatives to yttrium aluminum garnet
(YAG) for high-power solid-state laser systems. In this work, we present the synthesis of these sesquioxide nanopowders
by precipitation techniques and the subsequent processing of these nanopowders into sub-micron transparent ceramics
using a modifying two-step sintering approach. These transparent ceramics exhibited equivalent transparency to that of
analogous single crystals. The microhardness and fracture toughness of the modified two-step sintered ceramic exceeded
those of conventionally sintered ceramic by 25% and 70%, respectively.
This paper discusses the hydrothermal synthesis of doped and undoped Sc2O3 single crystals as well as Y2O3 and Sc2O3
nanoparticles as high purity precursors to polycrystalline laser hosts.
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