发明名称 |
Optical head using evanescent light and optical data recording/reproducing apparatus and method of using the same |
摘要 |
An optical information recording/reproducing method for recording and reproducing information using an evanescent light beam includes the steps of installing an optical head near an optical information recording medium, the optical head having a semiconductor laser, a photodetector for detecting a laser beam emitted from a first end surface of the semiconductor laser, and a device for generating evanescent light from the laser beam emitted from a second end surface of the semiconductor laser; injecting a current into the laser to produce a laser beam; generating an evanescent light by the laser beam in the evanescent light generating device; and interacting the evanescent light with the recording medium to record information on or reproduce information from the recording medium.
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申请公布号 |
US5734632(A) |
申请公布日期 |
1998.03.31 |
申请号 |
US19950483989 |
申请日期 |
1995.06.07 |
申请人 |
HITACHI, LTD. |
发明人 |
ITO, KENCHI;SHINTANI, TOSHIMICHI |
分类号 |
G11B7/12;G11B7/135;(IPC1-7):G11B7/09 |
主分类号 |
G11B7/12 |
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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