Towards a multi-layer near-field recording system: Dual-layer recording results

被引：0
|
作者：
Van Den Eerenbeemd, Jack M. A. [1 ]
Bruls, Dominique M. [1 ]
Verschuren, Coen A. [1 ]
Yin, Bin [1 ]
Zijp, Ferry [1 ]
机构：
[1] Philips Research Laboratories, High Tech Campus 34, 5656 AE Eindhoven, Netherlands
来源：
Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers | 2007年 / 46卷 / 6 B期
关键词：
We advocate the use of a polymeric cover layer for protecting the data layer and the tip of the solid immersion lens in near-field optical recording system. With a cover on top of the data layer; the numerical aperture (NA) of the objective lens is limited to the refractive index of the cover material. This means that the maximum attainable NA of cover-incident near-field systems and therefore the maximum achievable storage density is lower compared to that for first surface systems. This lower storage capacity per layer can be more than compensated for by using multiple data layers which is not possible in first-surface systems with bare discs. In this paper we present first experimental results for near-field recording with a solid immersion lens that focuses through a cover layer and a spacer layer onto a data layer; as in a dual-layer near-field disc. © 2007 The Japan Society of Applied Physics;
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页码：3894 / 3897
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