Purcell enhancement and focusing effects in plasmonic nanoantenna arrays

J. L. Stokes, A. Sarua, J. R. Pugh, N. Dorh, J. W. Munns, P. G. Bassindale, N. Ahmad, A. J. Orr-Ewing, M. J. Cryan*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

7 Citations (Scopus)
390 Downloads (Pure)


This paper presents measured fluorescence results for PMMA dye-coated 5 × 5 gold plasmonic nanoantenna arrays. We use numerical electromagnetic modeling to show how array size and element spacing can be used to control emitted beam shape and compare this with experimental data. The Friis formula from RF antenna theory is used to calculate the intensity enhancement produced by the array. A figure of merit is then developed, which accounts for the very small mode volume from which the array emission is occurring.

Original languageEnglish
Pages (from-to)2158-2163
Number of pages6
JournalJournal of the Optical Society of America B
Issue number10
Publication statusPublished - 24 Sept 2015

Bibliographical note

accepted 16 August 2015

Structured keywords

  • Photonics and Quantum


  • : (240.6680) Surface plasmons
  • (350.4238) Nanophotonics and photonic crystals


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