Imaging surface plasmons: from leaky waves to far-field radiation

Abstract

We show that, contrary to the common wisdom, surface plasmon poles are not involved in the imaging process in leakage radiation microscopy. Identifying the leakage radiation modes directly from a transverse magnetic potential leads us to reconsider the surface plasmon field and unfold the non-plasmonic contribution to the image formation. While both contributions interfere in the imaging process, our analysis reveals that the reassessed plasmonic field embodies a pole mathematically similar to the usual surface plasmon pole. This removes a long-standing ambiguity associated with plasmonic signals in leakage radiation microscopy.

This contains the original Phys. Rev. Lett. article and the supplementary information file

References in corpus (4)

• Weak Measurements of Light Chirality with a Plasmonic Slit
• A microscopic view of the electromagnetic properties of sub-wavelength metallic surfaces
• `Deterministic' quantum plasmonics
• Quantum plasmonics: second-order coherence of surface plasmons launched by quantum emitters into a metallic film

Cited by in corpus (7)

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• Highly efficient singular surface plasmon generation by achiral apertures
• Directional and singular surface plasmon generation in chiral and achiral nanostructures demonstrated by Leakage Radiation Microscopy