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11. 发明授权

US06418103B1 Initializing a phase-changing optical recording medium using a laser including a high speed shutter 失效
标题翻译：使用包括高速快门的激光器来初始化相变光学记录介质
公开(公告)号：US06418103B1
公开(公告)日：2002-07-09
申请号：US09392905
申请日：1999-09-09
申请人： Kazumine Ito , Manami Nakamura , Osamu Kawakubo , Hiroshi Kawase
发明人： Kazumine Ito , Manami Nakamura , Osamu Kawakubo , Hiroshi Kawase
IPC分类号： G11B700
CPC分类号： G11B7/268 , G11B7/26
摘要： Disclosed are an apparatus for initializing an optical recording medium to be initialized with stability and ease without employing any focus servo means, and a phase-changing optical recording medium initialized by the initializing apparatus to have a recording layer in a uniform crystalline state over an entire area of the medium which takes part in recording and reproduction of an information signal. In the apparatus for initializing a phase-changing optical recording medium, a laser beam emitted from a laser beam source is irradiated to a recording layer, in an amorphous state, formed in an optical recording medium to be initialized, which is a pre-stage member of the phase-changing optical recording medium, for changing the recording layer into a crystalline state. The laser beam source, e.g., a YAG laser, includes a high-speed shutter for exciting the laser beam source while the laser beam source is held in a state of not starting oscillation, and emits the laser beam within a very short time on the order of several tens nanoseconds (ns) to several hundreds nanoseconds (ns) with its peak power increased more than 10000 times that produced in a continuous oscillation mode.
摘要翻译：公开了一种用于初始化光记录介质以在不采用任何聚焦伺服装置的情况下稳定且容易地初始化的光记录介质的装置，以及由初始化装置初始化的相位改变光记录介质，以使得具有整体上均匀结晶状态的记录层参与记录和再现信息信号的介质的区域。在用于初始化相变光学记录介质的设备中，从激光束源发射的激光束照射到非易失性状态的记录层上，该记录层形成在初始化的光记录介质中，该光记录介质是前级用于将记录层改变为结晶状态的相变光学记录介质的成员。激光束源（例如YAG激光器）包括用于激发激光束源的高速快门，同时激光束源保持在不启动振荡的状态，并且在非常短的时间内将激光束发射在几十纳秒（ns）到几百纳秒（ns）的次数，其峰值功率增加了连续振荡模式下产生的10000倍。

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