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In this paper, a new form of noncoplanar optical bow-tie shaped nanoantenna structure is proposed, analyzed, and further arranged in array to investigate their near-field enhancement properties. The noncoplanar design not only improves the near-field electric field enhancement performance by 33% compared with that of the coplanar form, but also achieves better compatibility with subsequent conversion...
A new type of dielectric THz waveguide, which evolved from a recent approach from the held of integrated optics, is presented with theoretical and experimental results. Due to the continuity of electric flux density at a dielectric interface, the THz wave is predominantly confined in the virtually lossless low-index air core of a high-index dielectric waveguide. Attenuation, dispersion, field enhancement...
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