Dual shield vertical magneto-optical read head
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United States of America Patent
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Aug 3, 2004
Grant Date -
May 8, 2003
app pub date -
Nov 6, 2001
filing date -
Nov 6, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A magneto-optical read head for detecting magnetic transitions representing data stored in a magnetic recording medium as a sense layer having an optical property that is magnetic field-dependent, two magnetic shield layers respectively disposed on opposite sides of the sense layer and allowing magnetic flux from substantially only one of the magnetic transitions to interact with the sense layer at a time, with one of the magnetic shield layers being transparent at a wavelength allowing light at that wavelength to enter into and exit from the sense layer.
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