1996 年 20 巻 S_1_MORIS_96 号 p. S1_57-62
Three-dimensional Boundary Element Method (BEM) analysis of noise characteristics has been done to determine a suitable reproduction method for land/groove recording of magneto-optical disks. This analysis shows that groove depth fluctuation noise is much larger than groove width fluctuation noise or groove shape fluctuation noise. Noise in TM-polarization was also found to be lower than that in TE-polarization under calculation conditions which closely replicated practical disk conditions. The calculation results obtained agree well with experimental results. Finally, we propose a suitable reproduction method and substrate for use in magneto-optical disk land/groove recording.