Optimization of surface plasmon polariton generation in a nanocone through linearly polarized laser beams

M. Malerba, A. Alabastri, G. Cojoc, M. Francardi, M. Perrone Donnorso, R. Proietti Zaccaria, F. De Angelis*, Enzo Di Fabrizio

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

In this paper we present numerical FDTD calculations, optimizing experimental setup conditions for surface plasmon polariton (SPP) generation. The simulation considers a silver nanocone placed on a Si 3N 4 membrane, and studies the effects on the apex for a linearly polarized Gaussian light beam impinging from below or from the side of the cone. Radially polarized focused beams already proved to generate efficiently SPPs; in this work, we show that also linear polarization leads to an efficient generation of SPPs on the cone surface, as long as tilt angle and numeric aperture are optimized. In particular, we show that our setup conditions and proposed device, designed for a λ = 633 nm linearly polarized He-Ne laser, can enhance the incoming electric field up to 150 times at the apex of the cone.

Original languageEnglish (US)
Pages (from-to)204-207
Number of pages4
JournalMicroelectronic Engineering
Volume97
DOIs
StatePublished - Sep 1 2012

Keywords

  • Linear polarization
  • Photonics
  • Plasmonics
  • Raman
  • SPP
  • Surface plasmon polariton
  • TERS

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering

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