| 申请日期 | 2025-06-29 | 申请号 | EP03703054 |
| 公开（公告）号 | EP1588993B1 | 公开（公告）日 | 2010-11-03 |
| 公开国别 | EP | 申请人省市代码 | 全国 |
| 申请人 | Konoshima Chemical Co Ltd | ||
| 简介 | A rare earth garnet sintered compact which is produced by subjecting a rare earth garnet powder such as YAG to a pre-sintering, sintering the pre-sintered product by HIP, and annealing the sintered product at 1100 DEG C to 1600 DEG C in a whole oxygen atmosphere under a whole pressure of 4.5 MPa or more, and has an average crystallite diameter of 0.9 to 9 mu m, an optical loss coefficient of 0.002 cm or less and a strain of a transmitted wave of 0.05 lambda cm or less. | ||
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