title: Efficient excitation of channel plasmons in tailored, UV-lithography-defined V-grooves.
abstract: We demonstrate the highly efficient (>50%) conversion of freely propagating light to channel plasmon-polaritons (CPPs) in gold V-groove waveguides using compact 1.6 μm long waveguide-termination coupling mirrors. Our straightforward fabrication process, involving UV-lithography and crystallographic silicon etching, forms the coupling mirrors innately and ensures exceptional-quality, wafer-scale device production. We tailor the V-shaped profiles by thermal silicon oxidation in order to shift initially wedge-located modes downward into the V-grooves, resulting in well-confined CPPs suitable for nanophotonic applications.
authors: Department of Micro- and Nanotechnology, Technical University of Denmark , DK-2800 Kongens Lyngby, Denmark.
authors: Cameron L C
authors: CL
authors: Smith
authors: Anil H
authors: AH
authors: Thilsted
authors: Cesar E
authors: CE
authors: Garcia-Ortiz
authors: Ilya P
authors: IP
authors: Radko
authors: Rodolphe
authors: R
authors: Marie
authors: Claus
authors: C
authors: Jeppesen
authors: Christoph
authors: C
authors: Vannahme
authors: Sergey I
authors: SI
authors: Bozhevolnyi
authors: Anders
authors: A
authors: Kristensen