High-speed response to laser heating and cooling in thermo-magnetic writing on magneto-optical disk memory

Kazutomo Miyata; Jun Saito; Hideki Akasaka

doi:10.1117/12.190203

12 October 1994 High-speed response to laser heating and cooling in thermo-magnetic writing on magneto-optical disk memory

Kazutomo Miyata, Jun Saito, Hideki Akasaka

Author Affiliations +

Proceedings Volume 2338, 1994 Topical Meeting on Optical Data Storage; (1994) https://doi.org/10.1117/12.190203
Event: Optical Data Storage '94, 1994, Dana Point, CA, United States

Abstract

In order to use Magneto-Optical (MO) media for multi media applications, it is necessary to achieve higher density, higher data transfer rate and lower cost technologies than current MO media. MO recording is thermo- magnetic recording. MO recordings makes use of temperature modulation caused by light intensity modulation from the laser diode for recording. So, it is important to realize high speed response to the light intensity modulation for high data transfer rate recording. The high speed response is also indispensable to make small magnetic domains. So, it is important for high density recording, too. We investigate the temperature response to the light intensity modulation on MO disk. consequently, we found that MO medium shows the high speed response when the laser spot scanning velocity is large.

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Kazutomo Miyata, Jun Saito, and Hideki Akasaka "High-speed response to laser heating and cooling in thermo-magnetic writing on magneto-optical disk memory", Proc. SPIE 2338, 1994 Topical Meeting on Optical Data Storage, (12 October 1994); https://doi.org/10.1117/12.190203

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