双曲割线平面狭缝透镜的紧密光定位

2013 International Conference on Advanced Optoelectronics and Lasers (CAOL 2013) Pub Date : 2013-11-07 DOI:10.1109/CAOL.2013.6657592

A. Nalimov, V. Kotlyar

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引用次数: 0

摘要

通过时域有限差分模拟，我们发现折射率n=3.47的2 μm × 5 μm硅光子晶体双曲正割二元微透镜具有宽50 nm、长250 nm的狭缝，可以将平面tm波聚焦成尺寸为λ/23的近表面焦斑，衍射效率为44%。聚焦强度是入射波的60倍。

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Tight light localization in a hyperbolic secant planar slit lens

We show by FDTD simulation that a photonic-crystal hyperbolic secant binary microlens in silicon (with the refractive index n=3.47) of size 2 μm × 5 μm with a slit 50 nm wide and 250 nm long can focus a plane TM-wave into a near-surface focal spot of size λ/23 with a 44% diffraction efficiency. The focus intensity is 60 times higher than the incident wave.

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2013 International Conference on Advanced Optoelectronics and Lasers (CAOL 2013)

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