发明名称 |
Method for rewriting data in three-dimensional optical memory device fabricated in glass by ultra-short light pulse |
摘要 |
A method for rewriting data in a three-dimensional optical memory element created in glass with ultrashort light pulse includes creating a bit due to a photo-induced contrast in index of refraction inside the glass in three dimensions depending of the strength of a first ultrashort-pulse laser beam. Then, irradiating the bit created in three dimensions with a second ultrashort-pulse laser beam having a lower energy than the strength of the first ultrashort-pulse laser beam while condensing the second ultrashort-pulse laser beam with an optical lens at a point shifted from the bit to be moved by a predetermined distance in an opposite direction from the direction of propagation of the first and second ultrashort pulse laser beams, thereby moving the bit for rewriting.
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申请公布号 |
US6897433(B2) |
申请公布日期 |
2005.05.24 |
申请号 |
US20030276695 |
申请日期 |
2003.04.17 |
申请人 |
JAPAN SCIENCE AND TECHNOLOGY CORPORATION |
发明人 |
ITOH KAZUYOSHI;WATANABE WATARU;TOMA TADAMASA |
分类号 |
G02F1/35;G11B7/0045;G11B7/006;G11C13/04;G11C17/00;(IPC1-7):H01J3/14 |
主分类号 |
G02F1/35 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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