431 複屈折近接場光学顕微鏡による光ディスクのサブミクロン応力観測(光メカトロニクスII)(OS.6 ナノ構造創成をめざす光メカトロニクスの展開)

概要

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Magneto-optical (MO) disks, which have been used widely as removable/rewritable high-density data storage media, are produced by an injection molding method with polycarbonate resin. On the surface of MO disk, preformat pils and grooves are formed by transcription of stamper. Therefore, such a surface condition of disk influences MO data-reading. Recently, characteristic fluctuations in MO signals around boundaris between preformat pits and grooves in the adjacent bands had been reported. In this paper, we demonstrate optically localized orientation properties about MO disk using an illumination mode birefringence scanning near-field optical microscope (B-SNOM). It was thought that birefringence was caused by sub-micron size stresses induced around the preformat pits during the processing of MO disk.
一般社団法人日本機械学会の論文
2001-03-09