期刊
APPLIED PHYSICS LETTERS
卷 105, 期 1, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4887059
关键词
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资金
- Defense Advanced Research Projects Agency (DARPA) [W911NF-12-1-0281]
- AFOSR-MURI Program [FA9550-12-1-0026]
We propose to funnel, select, and collect light spectrally by exploiting the unique properties of deep-subwavelength resonant apertures in a metallic film. In our approach, each aperture has an electromagnetic cross section that is much larger than its physical size while the frequency of the collected light is controlled by its height through the Fabry-Peerot resonance mechanism. The electromagnetic crosstalk between apertures remains low despite physical separations in the deep-subwavelength range. The resulting device enables an extremely efficient, subwavelength way to decompose light into its spectral components without the loss of photons and spatial coregistration errors. As a specific example, we show a subwavelength-size structure with three deep-subwavelength slits in a metallic film designed to operate in the mid-wave infrared range between 3 and 5.5 mu m. (C) 2014 AIP Publishing LLC.
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