Magneto-Optical Memory Experiments On Chromium Dioxide Flexible Disk

Tatsuo Nomura; Haruki Tokumaru

doi:10.1117/12.970210

1 January 1983 Magneto-Optical Memory Experiments On Chromium Dioxide Flexible Disk

Tatsuo Nomura, Haruki Tokumaru

Proceedings Volume 0382, Optical Data Storage; (1983) https://doi.org/10.1117/12.970210
Event: Optical Data Storage, 1983, Incline Village, United States

Abstract

A new type of magneto-optical memory system using a chromium dioxide (Cr02) disk combined with a magnetic garnet film was described. Thermomagnetic recording was done onto the 35 cm diameter Cr0₂ disk with the focused Ar-laser beam and a recorded signal was read out magneto-optically through a magnetic garnet film placed close to the disk surface. A carrier-to-noise ratio of 35 dB was obtained at a disk speed of 50 m/s and frequency of 7 MHz. Track width of 3-4 μm was observed. A real time video recording experiment was successfully demonstrated.

Citation Download Citation

Tatsuo Nomura and Haruki Tokumaru "Magneto-Optical Memory Experiments On Chromium Dioxide Flexible Disk", Proc. SPIE 0382, Optical Data Storage, (1 January 1983); https://doi.org/10.1117/12.970210

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