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首页> 外文期刊>Japanese Journal of Applied Physics. Part 1, Regular Papers & Short Notes >Towards Cover-Layer Incident Read-Out of a Dual-layer Disc with a NA = 1.5 Solid Immersion Lens
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Towards Cover-Layer Incident Read-Out of a Dual-layer Disc with a NA = 1.5 Solid Immersion Lens

机译:面向NA = 1.5固体浸没透镜的双层光盘的覆盖层事件读取

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摘要

We present the status of our efforts to demonstrate the feasibility of recording on a cover-layer protected dual-layer optical disc with a blue laser and NA = 1.45 objective lens that is based on a solid immersion lens (SIL). We discuss the potential data density and some practical and theoretical considerations for the light path, the objective lens and the media. In particular, we show a lens design and results of prototype manufacturing for a NA = 1.45 lens that focuses on the data layer of an optical disc through a sub-wavelength air gap and a 3 μm spin coated cover-layer that protects the data on the disc.
机译:我们介绍了我们的工作现状,以证明在覆盖层保护的双层光盘上使用蓝色激光和NA = 1.45物镜(基于固体浸没透镜(SIL))进行记录的可行性。我们讨论了潜在的数据密度以及光路,物镜和介质的一些实践和理论考虑。尤其是,我们展示了NA = 1.45透镜的透镜设计和原型制造结果,该透镜通过亚波长气隙和3μm旋涂覆盖层将焦点集中在光盘的数据层上,以保护数据光盘。

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