Analysis of a Magneto-Optic Readout System
- 1 February 1963
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Electronic Computers
- Vol. EC-12 (1) , 3-9
- https://doi.org/10.1109/pgec.1963.263385
Abstract
The signal and the signal-to-noise ratio in a typical magneto-optic readout scheme intended for use in a high-capacity high-speed memory were analyzed. It was found that such a system does not yield higher signal levels and signal-to-noise ratios than are available with conventional magnetic head readout in such a peripheral memory. Calculations show that for 10-3-inch diameter bits recorded on an iron film in a system using an Osram XBO 150 high-pressure Xenon lamp, the signal-to-noise ratio at a megacycle transfer rate is in the neighborhood of 1. The maximum signal has about 300 photoelectrons per bit at the photocathode. It was concluded that although a magneto-optic system is impractical for such application, it may still be used in some display devices or in a medium-speed, medium-density fast access memory.Keywords
This publication has 4 references indexed in Scilit:
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- Kerr Magneto-Optic Effect in Nickel-Iron Films I ExperimentalJournal of the Optical Society of America, 1961
- Limitations of the Magneto-Optic Kerr Technique in the Study of Microscopic Magnetic Domain StructuresJournal of Applied Physics, 1961
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