Nanostructures for very broadband or multi-frequency transition from wave beams to a subwavelength light distributions

Details Nanostructures for very broadband or multi-frequency transition from wave beams to a subwavelength light distributions Nanostructures for very broadband or multi-frequency transition from wave beams to a subwavelength light distributions

2011-03-29

arxiv.org/abs/1104.0638v1

Physics

Optics

Submitted on 01Feb11 to PRB

Scientific paper

In this paper we suggest and theoretically study a tapered plasmonic nanostructure which connects the incident wave beam with a subwavelength spatial region where the field is locally enhanced in a broad frequency range or for different operation frequencies. This spatial region has a frequency stable location near the contour of the tapered structure. This results from a special waveguide mode which can also exist in the tapered structure. We foresee many possible applications for our structure from prospective near-field scanning optical microscopes to interconnects between conventional optical waveguides and prospective optical nanocircuits.

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