Dependence of Circularly Polarized Light Excited by Plasmon Aperture on Relative Position to Magnetic Particles for All-Optical Magnetic Recording

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概要

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•   The optical near-field close to a nanostructure aperture is studied to generate a confined circularly polarized light for high density all-optical magnetic recording. It is revealed that a plasmon four-leaf clover aperture with magnetic particle media is able to create confined circularly polarized light. The four-leaf clover aperture combined with a square pattern particle medium can create confined circularly polarized light within 15 nm of spot diameter. It is also found that an off-track of 7.5 nm can be allowed in the proposed configuration. A four-leaf clover aperture is one of effective local surface plasmon transducers for all-optical magnetic recording.

著者

• Nakagawa K.

  College of science and technology, Nihon University

• Itoh A.

  College of science and technology, Nihon University

• Tsukamoto A.

  College of science of Technology Nihon Univ.

• Ashizawa Y.

  College of Science and Technology, Nihon Univ.

• Iwamatsu H.

  College of Science and Technology, Nihon University

• Ota T.

  College of Science and Technology, Nihon University

• Ohnuki S.

  College of Science and Technology, Nihon University

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• A Role of Rapid Thermal Annealing (RTA) for Achieving Fine Isolated Grains of FeCuPt
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