Optical Review

, Volume 9, Issue 2, pp 66–69 | Cite as

Piano-Convex Solid Immersion Mirror with a Small Aperture for Near-field Optical Data Storage

  • Hiroshi Hatano
  • Tadafumi Sakata
  • Kazuyuki Ogura
  • Takayuki Hoshino
  • Hiroaki Ueda
OPTICAL SYSTEMS AND TECHNOLOGIES

Abstract

We proposed and developed a new solid immersion mirror (SIM) for near-field optical data storage. The SIM has some advantages, especially in manufacturing, because its shape is similar to a general plano-convex lens. Making an aperture of about 130 nm in diameter just on the focus area of the SIM, a bit-data recording onto a photochromic thin film was carried out. Minimum diameter of the written marks was estimated to be 180nm. We also demonstrated readout experiments where a recorded medium was rotating and a gap between the SIM and the disk was controlled with capacitance sensing. This is the first result of reading with a rotating disk using an SIM containing a small aperture.

Key words

solid immersion mirror SIM near-field optics optical memory optical data storage photochromic material aperture 

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Copyright information

© The Optical Society of Japan 2002

Authors and Affiliations

  • Hiroshi Hatano
    • 1
  • Tadafumi Sakata
    • 1
  • Kazuyuki Ogura
    • 1
  • Takayuki Hoshino
    • 1
  • Hiroaki Ueda
    • 1
  1. 1.Optics Technology Division, Takatsuki LaboratoryMinolta Co., Ltd.Takatsuki, OsakaJapan

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