Abstract

Fractal shaped periodic nanostructures formed with a 100nm period square lattice of gold nanoparticles placed on a gold film are characterized using far-field nonlinear scanning optical microscopy, in which two-photon photoluminescence (TPL) excited with a strongly focused femtosecond laser beam (in the wavelength range of 730790nm) is detected. TPL images obtained for all wavelengths in the laser range feature diffraction-limited (0.6μm) bright spots corresponding to intensity enhancements of up to 170, whose positions are dictated by the incident light wavelength and polarization. We relate the observed TPL enhancements to constructive interference of surface plasmon polaritons partially reflected inside the structure boundaries and support the analysis with numerical simulations using the Green dyadic field propagator.

© 2008 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Localized field enhancements in fractal shaped periodic metal nanostructures

Jonas Beermann, Ilya P. Radko, Alexandra Boltasseva, and Sergey I. Bozhevolnyi
Opt. Express 15(23) 15234-15241 (2007)

Surface-enhanced Raman imaging of fractal shaped periodic metal nanostructures

Jonas Beermann, Sergey M. Novikov, Ole Albrektsen, Michael G. Nielsen, and Sergey I. Bozhevolnyi
J. Opt. Soc. Am. B 26(12) 2370-2376 (2009)

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
Opt. Express 16(22) 17302-17309 (2008)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (10)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription