Journal
OPTICS EXPRESS
Volume 17, Issue 20, Pages 17483-17490Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.17.017483
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- French National Research Agency (ANR)
- French Ministry of Defense
- Direction generale de l'armement (DGA)
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We present an explicit form of the surface plasmon propagator. Its form has the structure of a vectorial Huygens-Fresnel principle. The propagator appears to be a powerful tool to deal with diffraction, interference and focusing of surface plasmons. In contrast with the scalar approximation used so far, the vectorial propagator accounts for near-field and polarization effects. We illustrate the potential of the propagator by studying diffraction of surface plasmons by a slit and focusing of surface plasmons by a Fresnel lens. (C) 2009 Optical Society of America
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