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We experimentally examine anisotropically etched silicon surfaces for terahertz (THz) plasmonic guided wave applications. Highly doped silicon surfaces are anisotropically etched to form a one-dimensional array of subwavelength concave pyramidal troughs. The plasmonic wave guides are found to support highly confined guided modes both in transverse and longitudinal directions. The resonant frequencies...
We report a terahertz waveguide fabricated from doped crystalline silicon. Anisotropic chemically etching is used to produce a periodic array of concave pyramidal troughs in the silicon that provide confinement in both transverse directions.
We experimentally investigated terahertz (THz) plasmonic waveguides on heavily doped silicon surface structured with sub-wavelength pillars. We study the propagation properties of the resonant modes and their dependence on dopant concentration and structural parameters.
We demonstrate planar plasmonic THz waveguides based on dimpled metal films. The propagation properties of the guided modes depend upon the geometrical parameters of the dimples and can be broadly engineered.
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