Multiple data surface magneto-optical data storage system

Details Multiple data surface magneto-optical data storage system Multiple data surface magneto-optical data storage system

1995-01-19

1997-07-01

Nelms, David C.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

369 14, 369114, G11C 1306

Patent

active

056445555

ABSTRACT:
An optical data storage system comprises an optical disk drive and a multiple data surface magneto-optical medium. The medium comprises a substrate, a first dielectric layer, a first magneto-optical data layer, a second dielectric layer, a transmissive member, a third dielectric layer, a second magneto-optical data layer, a fourth dielectric layer, and a reflector layer. The thicknesses of the magneto-optical and dielectric layers are selected to maximize the magneto-optical read out signal received from the data layers. The disk drive includes a phase retarder for improving the signal from the magneto-optical data layers.

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