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Proceedings Paper

A study of near field recording optics for cover-layer incident dual-layer disc with an NA=1.45 hemispherical solid immersion lens
Author(s): Osamu Koyama; Haruhiko Horiguchi; Chihiro Nagura; Koichiro Nishikawa; Osamu Nagatsuka
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Paper Abstract

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.

Paper Details

Date Published: 22 June 2006
PDF: 8 pages
Proc. SPIE 6282, Optical Data Storage 2006, 628229 (22 June 2006); doi: 10.1117/12.692276
Show Author Affiliations
Osamu Koyama, Canon Inc. (Japan)
Haruhiko Horiguchi, Canon Inc. (Japan)
Chihiro Nagura, Canon Inc. (Japan)
Koichiro Nishikawa, Canon Inc. (Japan)
Osamu Nagatsuka, Canon Inc. (Japan)


Published in SPIE Proceedings Vol. 6282:
Optical Data Storage 2006
Ryuichi Katayama; Tuviah E. Schlesinger, Editor(s)

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