Title :
High density magneto-optical recording using solid immersion lens with magnetic field modulation
Author :
Sbiaa, R. ; Stavrou, E. ; Chekanov, A. ; Birukawa, M. ; Itoh, Y. ; Suzuki, T.
Author_Institution :
Toyota Technol. Inst., Nagoya, Japan
fDate :
9/1/2000 12:00:00 AM
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. 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
Keywords :
intensity modulation; lenses; magneto-optical recording; enhanced resolution; high density magneto-optical recording; light intensity modulation; magnetic field modulation; near field optical technique; recording sensitivity; solid immersion lens; supersphere SIL; very high areal density; Intensity modulation; Lenses; Magnetic fields; Magnetic force microscopy; Magnetic modulators; Magnetooptic recording; Optical modulation; Optical recording; Signal resolution; Solids;
Journal_Title :
Magnetics, IEEE Transactions on
