公开(公告)号：EP1306853A1

公开(公告)日：2003-05-02

申请号：EP01932127.2

申请日：2001-05-18

申请人： Japan Science and Technology Corporation

发明人： ITOH, Kazuyoshi ,  WATANABE, Wataru ,  TOMA, Tadamasa

IPC分类号： G11C13/04 ,  G11B7/00 ,  G11B7/002 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/006 ,  G11B7/005 ,  G11B7/0055

CPC分类号： G11B7/0045 ,  G11B7/006 ,  G11C13/04 ,  G11C13/041 ,  G11C13/048

摘要： To provide a method for rewriting data in a three-dimensional optical memory element created in glass with ultrashort light pulses capable of moving created bits for rewriting.
A method for rewriting data in a three-dimensional optical memory element created in glass (18) with ultrashort light pulses comprises the steps of: creating a bit (23) due to a photo-induced contrast in index of refraction inside the glass (18) in three dimensions depending of the strength of a first ultrashort-pulse laser beam; and irradiating the bit (23) 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, and when condensing the laser beam with an optical lens (17), condensing the laser beam at a point shifted from the bit (23) to be moved by a predetermined distance in the opposite direction from the direction of propagation of the laser beam, thereby moving the bit (23) for rewriting.

摘要翻译： 一种用于在玻璃与能够移动用于重写创建比特的超短光脉冲产生的三维光存储元件重写数据的方法。 一种在玻璃（18）用超短光脉冲产生的三维光存储元件重写数据的方法包括以下步骤：创建一个位（23），由于在折射率的玻璃内部的光诱导的对比（18 ）在三维空间中悬垂的第一超短脉冲激光束的强度的; 并照射在三维空间具有第二超短脉冲激光束较低的能量比第一超短脉冲激光束的强度，并在光学透镜（17）会聚的激光束时所创建的位（23）的冷凝 在一个点上的激光束从位（23）转移到由预定的距离在相反方向上从所述激光束的传播方向移动，由此移动所述位（23），用于重写。