Near-Field Optical Simulation of Super-Resolution Near-Field Structure Disks.

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  • Nakano Takashi
    Advanced Optical Memory Group, National Institute for Advanced Interdisciplinary Research (NAIR), 1-1-4 Higashi, Tsukuba, Ibaraki 305-8562, Japan
  • Yamakawa Yuzo
    Corporate Research and Development Laboratory, Pioneer Corporation, 6-1-1 Fujimi, Tsurugashima, Saitama 350-2288, Japan
  • Tominaga Junji
    Advanced Optical Memory Group, National Institute for Advanced Interdisciplinary Research (NAIR), 1-1-4 Higashi, Tsukuba, Ibaraki 305-8562, Japan
  • Atoda Nobufumi
    Advanced Optical Memory Group, National Institute for Advanced Interdisciplinary Research (NAIR), 1-1-4 Higashi, Tsukuba, Ibaraki 305-8562, Japan

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Description

We describe the optical properties of readout signals from light-scatting-center super-resolution near-field structure disks by a numerical simulation using a three-dimensional finite-difference time-domain method (FDTD). Since the generation process of the near-field readout signals has a relationship between the direction of the mark train and the polarization direction of incident light, the optical properties of readout near-field signals strongly depended on the incident light polarization. It was found that the land & groove structure, and the scattering center size also influenced the readout signals.

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