High Spatial Resolution and Throughput Potential of an Optical Head with a Triangular Aperture for Near-Field Optical Data Storage
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概要
- 論文の詳細を見る
A near-field optical head with a triangular aperture has been precisely analyzed on the basis of a three-dimensional finite-difference time-domain method in order to obtain both higher spatial resolution and signal output performance for a near-field optical data storage system. The numerical analysis revealed that in contrast to a conventional aperture, this triangular-shaped aperture can successfully enhance energy distribution intensity at only the side perpendicular to the incident polarization direction, generating an extremely small optical spot not limited by its entire aperture size. The read-out performance was also simulated for the aperture passing over a space-patterned metal medium, resulting in both superior spatial resolution and signal output.
- Publication Office, Japanese Journal of Applied Physics, Faculty of Science, University of Tokyoの論文
- 2003-02-15
著者
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Hosaka Hiroshi
Graduate School Of Frontier Science The University Of Tokyo
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NAKAJIMA Kunio
Seiko Instruments Inc.
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Niwa Takashi
Seiko Instruments Inc.
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Itao Kiyoshi
Graduate School Of Frontier Science The University Of Tokyo
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Ohkubo Toshifumi
Toyo University
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TANAKA Kenji
Graduate School of Frontier Sciences, The University of Tokyo
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OUMI Manabu
Seiko Instruments Inc
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MITSUOKA Yasuyuki
Seiko Instruments Inc
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ICHIHARA Susumu
Seiko Instruments Inc.
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Hosaka Hiroshi
Graduate School of Frontier Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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Niwa Takashi
Seiko Instruments Inc., 563 Takatsuka-Shinden, Matsudo-Shi, Chiba 270-2222, Japan
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Ohkubo Toshifumi
Toyo University, 2100 Kujirai, Kawagoe-Shi, Saitama 350-8585, Japan
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Itao Kiyoshi
Graduate School of Frontier Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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Ichihara Susumu
Seiko Instruments Inc., 563 Takatsuka-Shinden, Matsudo-Shi, Chiba 270-2222, Japan
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Mitsuoka Yasuyuki
Seiko Instruments Inc., 563 Takatsuka-Shinden, Matsudo-Shi, Chiba 270-2222, Japan
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Tanaka Kenji
Graduate School of Frontier Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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Tanaka Kenji
Graduate School of Frontier Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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