Abstract

We numerically investigate the efficiency of surface-plasmon-polariton (SPP) focusing by curved chains of gold (silver) nanoparticles located on a gold (silver) surface. The employed model is based on the Green’s function formalism and the dipole approximation for field scattering by nanoparticles. The SPP focusing is considered for two cases of semicircle and parabolic chains of nanoparticles. We demonstrate that the efficiency of the SPP focusing is nonmonotonically dependent on the wavelength of an external light beam exciting the SPPs. Namely, the position of the intensity maximum at the focal point on the wavelength scale is determined by ohmic loss in the metal and scattering cross sections of individual nanoparticles in the chains. The dependence of the SPP focusing on the shape of the nanoparticle chains is also discussed.

© 2008 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Focusing and directing of surface plasmon polaritons by curved chains of nanoparticles

A. B. Evlyukhin, S. I. Bozhevolnyi, A. L. Stepanov, R. Kiyan, C. Reinhardt, S. Passinger, and B. N. Chichkov
Opt. Express 15(25) 16667-16680 (2007)

Surface plasmon polariton beam focusing with parabolic nanoparticle chains

Ilya P. Radko, Sergey I. Bozhevolnyi, Andrey B. Evlyukhin, and Alexandra Boltasseva
Opt. Express 15(11) 6576-6582 (2007)

Holographic evanescent-wave focusing with nanoparticle arrays

Andrey B. Evlyukhin and Sergey I. Bozhevolnyi
Opt. Express 16(22) 17429-17440 (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 (8)

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 (3)

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