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arXiv 0810.1553physics.optics
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用于纳米级光聚焦的等离子体微凹透镜的演示

Demonstration of a Plasmonic Dimple Lens for Nanoscale Focusing of Light

Hyojune Lee, Shantha Vedantam, Japeck Tang, Josh Conway, Matteo Staffaroni, Eli Yablonovitch

摘要:

将电磁能量聚焦到亚波长尺寸已经成为一个日益活跃的研究领域,用于各种应用,例如热辅助磁纪录(HAMR)、纳米光刻以及使用近场扫描光学显微镜(NSOM)技术的生物细胞和单分子的纳米级光学表征。金属-绝缘体-金属(MIM)几何结构中的双面表面等离子体激元已经被示出对于厚度小于10 nm的电介质具有非常小的波长。夹在金属之间的锥形电介质结构可以用于将来自自由空间光子的电磁能量有效地耦合到纳米级的等离子体波长。在本文中,我们提出了一种新的MIM等离子体透镜结构的制造和表征。

英文摘要:

Focusing electromagnetic energy to sub-wavelength dimensions has become an increasingly active field of research for a variety of applications such as Heat Assisted Magnetic Recording (HAMR), nanolithography, and nanoscale optical characterization of biological cells and single molecules using near-field scanning optical microscopy (NSOM) technique. Double-sided surface plasmons in a metal-insulator-metal (MIM) geometry have been shown to have very small wavelengths for dielectric of thickness of less than 10 nm. A tapered dielectric structure sandwiched between metal, can be used to efficiently couple electromagnetic energy from free space photons to the plasmonic wavelengths at the nanoscale. In this paper, we present the fabrication and characterization of a novel MIM plasmonic lens structure.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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