Challenge for Near-Field Recording beyond 50 Gbit/inch^2

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Other Title
  • 相変化記録材料に対する50 Gbit/inch^2超近接場光記録の検討(光記録及び一般)
  • 相変化記録材料に対する50Gbit/inch2超近接場光記録の検討
  • ソウヘンカ キロク ザイリョウ ニ タイスル 50Gbit inch2 チョウキンセツバ ヒカリ キロク ノ ケントウ

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Abstract

We enabled near-field optical recording by developing a near-field optical head using solid immersion lens (SIL) and airgap servo system in the range of 50nm. The areal recording density of 50 Gbit/inch^2 is expected by the combination of 1.5 Numerical-Aperture (NA) optical head and GaN laser diode as a light source. In this paper, we explain our developed optical pickup and our developed near-field phase-change optical disk, and we report the latest experimental results of challenging the areal density of over 50 Gbit/inch^2.

Journal

  • ITE Technical Report

    ITE Technical Report 26.19 (0), 25-30, 2002

    The Institute of Image Information and Television Engineers

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