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- W2553430508 abstract "Optical nanoantennas [1–4] formed by single or paired metallic nanoparticles have been recently demonstrated to efficiently couple the propagating light into and from deeply subwavelength volumes beyond the diffraction limit. The strong light-matter interaction mediated by collective oscillations of surface plasmons polaritons in metal may allow for manipulation of photon absorption, emission, and localization at the nanoscale. Here we theoretically study the nanodipole antennas with nano/subnano feedgaps (less than 3 nm), for which the multiphoton-assisted tunneling or internal photoemission may give rise to a set of quantum conductivities and polarizing currents at the fundamental frequency and its high harmonics [2]. More interestingly, these quantum conductivities and associated optical nonlinearities can be dramatically enhanced by the plasmonic resonance and strong field localization in the nanogap between two metallic dipole arms. In this talk, we will present the design and semiclassical modeling of nonlinear and reconfigurable optical metasurfaces formed by a planar array of “quantum-plasmonic” nanoantennas. We show that optical nonlinearities sourced from higher-order quantum conductivities may be boosted by the plasmonic resonance and mutual coupling of nonlinear nanoantennas. We will discuss several exciting applications of the proposed quantum-plasmonic structures, including the efficient frequency multiplication at the nanoscale, the dynamic resistive switching for holographic imaging, and the ultrafast rectification of infrared radiation for emissive energy harvesting." @default.
- W2553430508 created "2016-11-30" @default.
- W2553430508 creator A5082737881 @default.
- W2553430508 date "2016-08-01" @default.
- W2553430508 modified "2023-09-26" @default.
- W2553430508 title "Nonlinear and plasmo-electronic metasurfaces using plasmonic nanoantennas" @default.
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- W2553430508 doi "https://doi.org/10.1109/piers.2016.7734928" @default.
- W2553430508 hasPublicationYear "2016" @default.
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