| 超分辨近场结构中二元共晶合金掩膜的工作机制 |
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| 引用本文： | 瞿青玲,王阳,干福熹. 超分辨近场结构中二元共晶合金掩膜的工作机制[J]. 中国激光, 2007, 34(4): 30-533 |
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| 作者姓名： | 瞿青玲 王阳 干福熹 |
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| 作者单位： | 中国科学院上海光学精密机械研究所,上海,201800 |
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| 摘 要： | 超分辨近场结构(super-RENS)技术通过在传统光盘结构中插入掩膜结构而实现近场超分辨,是目前最具实用化前景的超高密度光存储技术之一,其中掩膜层的近场光学特性是决定其光存储性能的关键。利用三维时域有限差分法(3D-FDTD)对合金掩膜的近场光强分布进行了数值仿真和分析,提出二元共晶合金薄膜在激光作用下形成的规则微结构可能是以其作为掩膜层的超分辨近场结构光盘产生较高信噪比(SNR)的原因。
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| 关 键 词： | 光存储 超分辨近场结构 三维时域有限差分法 二元共晶合金 信噪比 |
| 文章编号： | 0258-7025（2007）04-0530-04 |
| 收稿时间： | 2006-09-05 |
| 修稿时间： | 2006-09-05 |
Working Mechanism of the Binary Eutectic Alloy Mask Layer in Super-Resolution Near-Field Structure |
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| QU Qing-ling,WANG Yang,GAN Fu-xi. Working Mechanism of the Binary Eutectic Alloy Mask Layer in Super-Resolution Near-Field Structure[J]. Chinese Journal of Lasers, 2007, 34(4): 30-533 |
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| Authors: | QU Qing-ling WANG Yang GAN Fu-xi |
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| Affiliation: | Shanghai Institute of Optics and Fine Mechanics, The Chinese Academy of Sciences, Shanghai 201800, China |
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| Abstract: | Super resolution near-field structure(super-RENS) is one of the most promising candidates for the ultrahigh-density optical storage,and near-field optical properties of the mask layer in super-RENS optical disk are crucial for its optical storage performance.The near-field distribution through the eutectic alloy mask layer has been studied by using three-dimensional finite-difference time-domain(3D-FDTD) method.Simulation results indicate that the periodic micro-/nano-structures formed in the eutectic binary alloy films after or during irradiation of a laser beam will result in a prominent near field enhancement and may be the origin of the higher signal-to-noise ratio(SNR) in super-RENS optical disk. |
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| Keywords: | optical storage super resolution near-field structure three-dimensional finite-difference time-domain binary eutectic alloy signal-to-noise ratio |
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