发明名称 |
Hot-Pressed Transparent Ceramics and Ceramic Lasers |
摘要 |
A transparent polycrystalline ceramic having scattering and absorption loss less than 0.2/cm over a region comprising more than 95% of the originally densified shape and further provides a process for fabricating the same by hot pressing. The ceramic can be any suitable ceramic such as yttria (Y2O3) or scandia (Sc2O3) and can have a doping level of from 0 to 20% and a grain size of greater than 30μm, although the grains can also be smaller than 30μm. In a process for making a transparent polycrystalline ceramic in accordance with the present invention, ceramic nanoparticles can be coated with a sintering aid to minimize direct contact of adjacent ceramic powder particles and then baked at high temperatures to remove impurities from the coated particles. The thus-coated particles can then be densified by hot pressing into the final ceramic product. The invention further provides a transparent polycrystalline ceramic solid-state laser material and a laser using the hot pressed polycrystalline ceramic.
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申请公布号 |
US2010155678(A1) |
申请公布日期 |
2010.06.24 |
申请号 |
US20090620613 |
申请日期 |
2009.11.18 |
申请人 |
THE GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF THE NAVY |
发明人 |
SANGHERA JASBINDER S.;VILLALOBOS GUILLERMO R.;SHAW LESLIE BRANDON;KIM WOOHONG;BAYYA SHYAM S.;FRANTZ JESSE A.;AGGARWAL ISHWAR D. |
分类号 |
G02F1/355;C04B35/50;C04B35/553 |
主分类号 |
G02F1/355 |
代理机构 |
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