1. Subdiffraction Limited Photonic Funneling of Light.
- Author
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Li, Kun, Simmons, Evan, Briggs, Andrew, Nordin, Leland, Xu, Jiaming, Podolskiy, Viktor, and Wasserman, Daniel
- Subjects
COMPOSITE materials ,RADIATION ,DIELECTRICS ,METAMATERIALS ,WAVELENGTHS ,INFRARED radiation - Abstract
Efficient optical coupling between nano‐ and macroscale areas is strongly suppressed by the diffraction limit. This work presents a possible solution to this fundamental problem via the experimental fabrication, characterization, and comprehensive theoretical analysis of structures referred to as "photonic funnels." The funnels represent a novel composite material platform that combines hyperbolic dielectric response with geometry‐assisted optical confinement. Experimentally, funneling of mid‐infrared light through openings with diameters as small as 1/25th of the free space wavelength (λ0) is demonstrated. By analyzing the optical response of the funnels, as fabricated, both confinement of mid‐infrared radiation to the λ0/25 areas and efficient outcoupling of light from deep subwavelength areas are confirmed. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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