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

Osamu Koyama; Haruhiko Horiguchi; Chihiro Nagura; Koichiro Nishikawa; Osamu Nagatsuka

doi:10.1117/12.692276

22 June 2006 A study of near field recording optics for cover-layer incident dual-layer disc with an NA=1.45 hemispherical solid immersion lens

Osamu Koyama, Haruhiko Horiguchi, Chihiro Nagura, Koichiro Nishikawa, Osamu Nagatsuka

Author Affiliations +

Proceedings Volume 6282, Optical Data Storage 2006; 628229 (2006) https://doi.org/10.1117/12.692276
Event: Optical Data Storage 2006, 2006, Montréal, Canada

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.

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Osamu Koyama, Haruhiko Horiguchi, Chihiro Nagura, Koichiro Nishikawa, and Osamu Nagatsuka "A study of near field recording optics for cover-layer incident dual-layer disc with an NA=1.45 hemispherical solid immersion lens", Proc. SPIE 6282, Optical Data Storage 2006, 628229 (22 June 2006); https://doi.org/10.1117/12.692276

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