Gap plasmon polariton structure for very efficient micro to nano scale interfacing

Details Gap plasmon polariton structure for very efficient micro to nano scale interfacing Gap plasmon polariton structure for very efficient micro to nano scale interfacing

2006-05-23

arxiv.org/abs/physics/0605193v1

Physics

Optics

Submitted to PRL. Part of the work was presented at IPRA-2005 conference, paper JWA6

Scientific paper

10.1364/OL.31.003288

The seamless transition between micro-scale photonics and nano-scale plasmonics requires the mitigation between different waveguiding mechanisms as well as between few orders of magnitude in the field lateral size, down to a small fraction of a wavelength. By exploiting gap plasmon polariton waves both at the micro and nano scale, very high power transfer efficiency (>60%) can be achieved using an ultrashort (few microns) non adiabatic tapered gap plasmon waveguide. Same mechanism may be used to harvest impinging light waves and direct them into a nano hole or slit, to exhibit an anomalous transmission - without the conventional periodic structures. The special interplay of plasmonic and oscillating modes is analyzed.

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