A study of near field recording optics for cover-layer incident dual-layer disc with an NA=1.45 hemispherical solid immersion lens

被引：0
|
作者：
Koyama, Osamu [1 ]
Horiguchi, Haruhiko [1 ]
Nagura, Chihiro [1 ]
Nishikawa, Koichiro [1 ]
Nagatsuka, Osamu [1 ]
机构：
[1] Canon Inc, Core Technol Dev Headquarters, Hybrid Device Dev Ctr, Ohta Ku, 3-30-2 Shimomaruko, Tokyo 1468501, Japan
来源：
OPTICAL DATA STORAGE 2006 | 2006年 / 6282卷
关键词：
near field recording; SIL; solid immersion lens; spherical aberration compensation;
D O I：
10.1117/12.692276
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Practical optics for a cover-layer incident dual-layer disc with an NA=1.45 hemispherical solid. immersion lens are designed, using a spherical aberration compensating liquid crystal cell. A hybrid servo system, gap servo for NA > 1 and focus servo for NA < 1, is proposed.
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页数：8
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