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Meeting Materials Science & Technology 2015
Symposium Ceramic Optical Materials
Presentation Title Laser Oscillation of Lu-based Oxide Ceramics by Spark Plasma Sintering
Author(s) Takashi Goto, Liqiong An, Akihiko Ito
On-Site Speaker (Planned) Takashi Goto
Abstract Scope Transparent single crystals have wide-ranged applications such as scintillators and lasers. However, single crystal growth needs high temperature with a long time, and they are mechanically weak. Polycrystalline ceramics, on the other hand, could be more advantageous than single crystals because of less dopant segregation, high strength and low proceeding temperature. Spark plasma sintering (SPS) can consolidate many ceramics at a low temperature in a short time without significant grain growth. We have applied SPS to synthesize transparent ceramics by using commercially available powders. In order to obtain transparent ceramics, voids should be eliminated by optimizing a sintering procedure. We have employed a two-step profile and post-annealing, and prepared transparent Lu-based ceramics. Nd3+ 1 at% doped Lu2O3 ceramics by SPS has first exhibited laser oscillation. Transparent Lu3Al5O12 ceramics were first prepared by SPS, and new transparent Lu2Ti2O7, Lu3NbO7 and Lu2Hf2O7 ceramics were first synthesized.
Proceedings Inclusion? Planned: MS&T all conference proceedings CD

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Cladded Single Crystal Fibers
Creation of New Material Science on Optical Ceramics
Effects of Varied Heat Treatments on Precipitation of Alumina in Astoichiometric Magnesium Aluminate Spinel
Fabrication of Transparent Magnesium Aluminate Spinel Ceramics using Two Kinds of Spinel Powder with Different Particle Sizes
Fundamental Study in the Processing of Transparent Ceramics
Highly Transparent Polycrystalline YAG Ceramics for Optical Applications
Laser Oscillation of Lu-based Oxide Ceramics by Spark Plasma Sintering
Low Absorption Spinel Windows for High Energy Lasers
NMR Spectroscopy of Paramagnetic Doped Ceramics to Determine Site Occupancy and Distribution
Novel Glass and Glass Ceramic Scintillators for Gamma-ray and Neutron Detection
Polycrystalline Transparent Yttrium Aluminum Garnet for Optical Applications
Praseodymium-doped SiAlON Red Phosphors Prepared by Polymer-derived Method
Processes and Characterizations of Ceramic Optical Fibers
Spark Plasma Sintering of Transparent Ceramics and Unusual Grain Growth
Synthesis and Processing of Transparent Ceramic Scintillators for Nuclear Radiation Detection
The Role of Scattering and Absorption on the Optical Properties of Birefringent Polycrystalline Ceramics: Modeling and Experiments
Transparent Ceramic Scintillators
Transparent Magnesium Aluminate Spinel Prepared via Microfluidization and Aqueous Slip-casting
Transparent Spinel by Microwave Sintering

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