Localized surface-plasmon resonances in periodic nondiffracting metallic nanoparticle and nanohole arrays
Parsons, J.; Hendry, Euan; Burrows, Christopher P.; et al.Auguié, Baptiste; Sambles, J. Roy; Barnes, William L.
Date: 26 February 2009
Journal
Physical Review B
Publisher
American Physical Society
Publisher DOI
Abstract
We compare the optical response of periodic nondiffracting metallic nanoparticle and nanohole arrays. Experimental data from both structures show a pronounced minimum in their wavelength-dependent transmittance that, through numerical modeling, we identify as being due to the excitation of localized surface-plasmon resonances associated ...
We compare the optical response of periodic nondiffracting metallic nanoparticle and nanohole arrays. Experimental data from both structures show a pronounced minimum in their wavelength-dependent transmittance that, through numerical modeling, we identify as being due to the excitation of localized surface-plasmon resonances associated with the nanoparticles/nanoholes. Our main finding is that, while the optical response of the nanoparticle arrays is largely independent of interparticle separation, the response from nanohole arrays shows a marked dependence on interhole separation. We attribute this effect to coupling between localized surface-plasmon resonances mediated by the symmetric surface plasmon-polaritons associated with the metal film. Further numerical modeling supports this view.
Physics and Astronomy
Faculty of Environment, Science and Economy
Item views 0
Full item downloads 0