Abstract
A near field optical technique based on combined supersphere solid immersion lens (SIL) with magnetic field modulation (MFM) recording is described for high density magneto-optical recording. The analysis of read-write performance of this system has been developed in this paper. A better resolution has been achieved by using SIL with MFM recording in comparison with light intensity modulation (LIM). We found that recorded mark of 0.3 μm × 0.2 μm could be obtained. These marks were readout by the SIL head with a typical signal to noise ratio value of 36 dB. The present study demonstrated the capability to achieve a very high areal density beyond 20 Gb/in^2
