Title :
Observation of magneto-optical disk by birefringence contrast scanning near-field optical microscope
Author :
Ohkubo, S. ; Takayanagi, A. ; Umeda, N. ; Umezawa, T. ; Tomie, T.
Author_Institution :
Dept. of Mech. Syst. Eng., Tokyo Univ. of Agric. & Technol., Japan
Abstract :
Birefringence contrast scanning near-field optical microscope has been used to observe a boundary between preformat pits and grooves on the surface of magneto-optical disk. A periodic fluctuation of birefiringence was observed on the groove of boundary. This fluctuation seems to be a stress birefringence induced by preformat pits.
Keywords :
magneto-optical recording; mechanical birefringence; near-field scanning optical microscopy; azimuth angle variation; birefringence contrast SNOM; illumination mode birefringence contrast; localized birefringence; magneto-optical disk; periodic birefringence fluctuation; photoelastic effect; preformat pits; stress birefringence; surface grooves; Birefringence; Disk recording; Fluctuations; Lighting; Magnetic force microscopy; Optical fiber polarization; Optical microscopy; Optical recording; Optical surface waves; Stress;
Conference_Titel :
Lasers and Electro-Optics, 2001. CLEO/Pacific Rim 2001. The 4th Pacific Rim Conference on
Conference_Location :
Chiba, Japan
Print_ISBN :
0-7803-6738-3
DOI :
10.1109/CLEOPR.2001.967786
