Highly efficient interfacing of guided plasmons and photons in nanowires.
Successful exploitations of strongly confined surface plasmon-polaritons critically rely on their efficient and rapid conversion to lossless channels. We demonstrate a simple, robust, and broadband butt-coupling technique for connecting a metallic nanowire and a dielectric nanofiber. Conversion efficiencies above 95% in the visible and close to 100% in the near-infrared can be achieved with realistic parameters. Moreover, by combining butt-coupling with nanofocusing, we propose a broadband high-throughput near-field optical microscope.
Chen
Xue-Wen
XW
Laboratory of Physical Chemistry and optETH, ETH Zurich, 8093 Zurich, Switzerland.
Sandoghdar
Vahid
V
Agio
Mario
M