Observation of propagation of surface plasmon polaritons along line defects in a periodically corrugated metal surface

S.I. Bozhevolnyi, V.S. Volkov, Kristjan Leosson, John Erland Østergaard

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Propagation of surface plasmon polaritons (SPPs) excited in the wavelength range 720-830 nm at a corrugated gold-film surface with areas of 150-nm-wide and 45-nm-high scatterers arranged in a 380-nm-period triangular lattice containing line defects is investigated by use of near-field optical microscopy. We demonstrate that the SPP at 740-750 nm propagates along 2.2-mum-wide and 16-mum-long line defects with similar to 50% loss, whereas its propagation along narrower line defects is strongly damped and in periodically corrugated areas is inhibited. We observe significant deterioration of these effects for both longer and shorter wavelengths and conclude that the SPP guiding occurs as a result of the SPP bandgap effect in the structures.
Original languageEnglish
JournalOptics Letters
Volume26
Issue number10
Pages (from-to)734-736
ISSN0146-9592
Publication statusPublished - 2001

Fingerprint Dive into the research topics of 'Observation of propagation of surface plasmon polaritons along line defects in a periodically corrugated metal surface'. Together they form a unique fingerprint.

Cite this