期刊
PHYSICAL REVIEW B
卷 75, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.75.035108
关键词
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资金
- Engineering and Physical Sciences Research Council [EP/E053025/1] Funding Source: researchfish
- EPSRC [EP/E053025/1] Funding Source: UKRI
We demonstrate that an array of metallic nanorods enables subwavelength (near-field) imaging at infrared frequencies. Using an homogenization approach, it is theoretically proved that under certain conditions the incoming radiation can be transmitted by the array of nanorods over a significant distance with fairly low attenuation. The propagation mechanism does not involve a resonance of material parameters and thus the resolution is not strongly affected by material losses and has wide bandwidth. The subwavelength imaging with lambda(0)/10 resolution by silver rods at 30 THz and over a propagating distance of 0.6 lambda(0) is demonstrated numerically using a full-wave electromagnetic simulator.
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