Balcı, SinanKarademir, ErtuğrulKocabaş, CoşkunAydınlı, Atilla2016-02-082016-02-082011-080146-9592http://hdl.handle.net/11693/21781In this Letter, we report on dark field imaging of localized surface plasmon polaritons (SPPs) in plasmonic waveguiding bands formed by plasmonic coupled cavities. We image the light scattered from SPPs in the plasmonic cavities excited by a tunable light source. Tuning the excitation wavelength, we measure the localization and dispersion of the plasmonic cavity mode. Dark field imaging has been achieved in the Kretschmann configuration using a supercontinuum white-light laser equipped with an acoustooptic tunable filter. Polarization dependent spectroscopic reflection and dark field imaging measurements are correlated and found to be in agreement with finite-difference time-domain calculations.EnglishAcousto-optic tunable filtersCavity modeCoupled cavityDark field imagingDirect imagingExcitation wavelengthFinite difference time domainsKretschmann configurationLocalized surface plasmon polaritonsPlasmonicSupercontinuumWave-guidingWhite-light laserElectromagnetic wave polarizationFinite difference time domain methodQuantum theorySolidsTime domain analysisPlasmonsArticle10.1364/OL.36.003401