| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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Improving Recording Density of All-Optical Magnetic Storage by Using High-Pass Angular Spectrum Filters |
| ZHUANG You-Yi, ZHANG Yao-Ju |
| College of Physics and Electronic Information, Wenzhou University, Wenzhou 325035 |
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| Cite this article: |
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ZHUANG You-Yi, ZHANG Yao-Ju 2009 Chin. Phys. Lett. 26 108501 |
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Abstract A new design is presented to improve the magnetic recording density in all-optical magnetic storage. By using the high numerical lens with a high-pass angular spectrum filter, circularly polarized laser pulses are focused into the magneto-optic film with the perpendicular anisotropy. Magnetization of the film is induced by the inverse Faraday effect. As the obstructed angle of the filter increases the magnetic recording density increases evidently. The magnetization intensity and the sidelobe effect are also discussed.
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| Keywords:
85.70.Sq
85.70.Li
42.79.Ci
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Received: 25 February 2009
Published: 27 September 2009
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| PACS: |
85.70.Sq
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(Magnetooptical devices)
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85.70.Li
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(Other magnetic recording and storage devices (including tapes, disks, And drums))
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42.79.Ci
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(Filters, zone plates, and polarizers)
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Abstract
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