Optical nanorod antennas as dispersive one-dimensional Fabry–Pérot resonators for surface plasmons

Cubukcu, Ertugrul; Capasso, Federico
November 2009
Applied Physics Letters;11/16/2009, Vol. 95 Issue 20, p201101
Academic Journal
Resonant optical nanoantennas exhibit a different length scaling due to the surface plasmons compared to their radio frequency counterparts. In this letter, we address this difference by calculating the wavelength-dependent effective mode index neff for a cylindrical one-dimensional gold nanowire waveguide. Our results show that nanorod optical antennas act as dispersive and lossy Fabry–Pérot resonators for surface plasmons.


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