Highly efficient interfacing of guided plasmons and photons in nanowires.
basic_science · Level V
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- Record sourced from PubMed, PMID 19754143.
- Also identified by DOI 10.1021/nl9019424.
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Abstract
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.