Abstract

We present a semi-analytical study exploring the end-fire coupling of a free-space incident beam into a surface plasmon propagating along the interface of a dielectric and a lossy plasmonic material. Using a projection method that calculates the surface plasmon coupling efficiencies for this configuration, we explain in detail how the challenges of including loss, and thus having complex permittivities, have been overcome. A comparison is made of the coupling efficiencies of four plasmonic materials: Ag, Au, TiN, and ZrN. We show that TiN has a consistently higher coupling efficiency than the other three materials for wavelengths between 0.5 and 2.0 μm. All four materials are capable of providing end-fire coupling efficiencies above 87% within this wavelength range.

© 2016 Optical Society of America

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Corrections

Caitlin Fisher, Lindsay C. Botten, Christopher G. Poulton, Ross C. McPhedran, and C. Martijn de Sterke, "End-fire coupling efficiencies of surface plasmons for silver, gold, and plasmonic nitride compounds: erratum," J. Opt. Soc. Am. B 33, 2587-2587 (2016)
https://www.osapublishing.org/josab/abstract.cfm?uri=josab-33-12-2587

9 May 2016: A correction was made to the author listing.


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