Abstract
We investigate the local optical response of split-ring resonator-(SRR)-based metamaterials with an apertureless scanning near-field optical microscope. By mapping the near fields of suitably resonant micrometer-sized SRRs in the near-infrared spectral region with an uncoated silicon tip, we obtain a spatial resolution of better than . The experimental results confirm numerical predictions of the near-field excitations of SRRs. Combining experimental near-field optical studies with near- and far-field optical simulations provides a detailed understanding of resonance mechanisms in subwavelength structures and will facilitate an efficient approach to improved designs.
© 2008 Optical Society of America
Full Article | PDF ArticleMore Like This
Daniela Diessel, Manuel Decker, Stefan Linden, and Martin Wegener
Opt. Lett. 35(21) 3661-3663 (2010)
Boubacar Kanté, André de Lustrac, Jean-Michel Lourtioz, and Frédérique Gadot
Opt. Express 16(10) 6774-6784 (2008)
Kamil Boratay Alici and Ekmel Ozbay
Opt. Lett. 34(15) 2294-2296 (2009)