Near-field observation of light propagation in nanocoax waveguides
作者： Juan M. Merlo , Fan Ye , Binod Rizal , Michael J. Burns , Michael J. Naughton
DOI: 10.1364/OE.22.014148
关键词:
摘要: We report the observation of propagating modes visible and near infrared light in nanoscale coaxial (metal-dielectric-metal) structures, using near-field scanning optical microscopy. Together with numerical calculations, we show that propagated have different nature depending on excitation wavelength, i.e., plasmonic TE11 TE21 photonic TE31, TE41 TM11 visible. Far field transmission out nanocoaxes is dominated by superposition Fabry-Perot cavity resonating consistent theory. Such waveguides may be useful for future systems.
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