High density magneto-optical recording using solid immersion lens with magnetic field modulation

R. Sbiaa, E. Stavrou, A. Chekanov, M. Birukawa, Y. Itoh, T. Suzuki

Research output: Contribution to journalArticle

Abstract

A near field optical technique based on combined supersphere solid immersion lens (SIL) with magnetic field modulation (MFM) recording is described. A better resolution is achieved by using SIL with MFM recording in comparison with light intensity modulation (LIM). A recorded mark as small as 0.3 μm × 0.2 μm could successfully be detected. These marks were readout by the SIL head with a typical signal to noise ratio value of 36 dB. The present study demonstrates the capability to achieve a very high areal density beyond 20 Gb/in2.

Original languageEnglish
Pages (from-to)2276-2278
Number of pages3
JournalIEEE Transactions on Magnetics
Volume36
Issue number5 I
DOIs
Publication statusPublished - Sep 2000

Keywords

  • Magneto-optical recording
  • Near field optics
  • Numerical aperture (NA)
  • Solid immersion lens (SIL)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

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