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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 22 — Oct. 27, 2008
  • pp: 17302–17309

Two-photon mapping of localized field enhancements in thin nanostrip antennas

Jonas Beermann, Sergey M. Novikov, Thomas Søndergaard, Alexandra E. Boltasseva, and Sergey I. Bozhevolnyi  »View Author Affiliations

Optics Express, Vol. 16, Issue 22, pp. 17302-17309 (2008)

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Resonant scattering and local field enhancements by 11-nm-thin gold nanostrip antennas due to constructive interference of counter propagating slow surface plasmon polaritons is investigated. We characterize nanostrips of widths between 50-530 nm using both reflection spectroscopy and nonlinear scanning optical microscopy, in which two-photon-excited photoluminescence (TPL) excited with a strongly focused laser beam at the wavelength 745 nm is detected. We use TPL images to map the local field enhancements from individual nanostrips at a resolution of 0.35µm and compare results with theoretical calculated reflection spectra, enhancement levels and field distributions across the strip.

© 2008 Optical Society of America

OCIS Codes
(180.5810) Microscopy : Scanning microscopy
(190.0190) Nonlinear optics : Nonlinear optics
(240.6680) Optics at surfaces : Surface plasmons
(290.0290) Scattering : Scattering

ToC Category:
Optics at Surfaces

Original Manuscript: September 10, 2008
Revised Manuscript: October 9, 2008
Manuscript Accepted: October 10, 2008
Published: October 13, 2008

Jonas Beermann, Sergey M. Novikov, Thomas Søndergaard, Alexandra Boltasseva, and Sergey I. Bozhevolnyi, "Two-photon mapping of localized field enhancements in thin nanostrip antennas," Opt. Express 16, 17302-17309 (2008)

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