Second-harmonic optical spectroscopy on split-ring-resonator arrays

Previous second-harmonic-generation experiments on metallic split-ring-resonator arrays have been performed at fixed fundamental laser center frequency. Here, we perform nonlinear optical spectroscopy on a first set of samples, revealing pronounced resonances. Furthermore, to clarify the role of hig...

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Bibliographic Details
Published inOptics letters Vol. 36; no. 9; p. 1533
Main Authors Niesler, Fabian B P, Feth, Nils, Linden, Stefan, Wegener, Martin
Format Journal Article
LanguageEnglish
Published United States 01.05.2011
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Summary:Previous second-harmonic-generation experiments on metallic split-ring-resonator arrays have been performed at fixed fundamental laser center frequency. Here, we perform nonlinear optical spectroscopy on a first set of samples, revealing pronounced resonances. Furthermore, to clarify the role of higher-order split-ring resonances, we perform additional experiments on a second set of samples in which the fundamental split-ring-resonator resonance frequencies are lithographically tuned, whereas the higher-order resonances are fixed. We find that the higher-order resonances merely reabsorb the second-harmonic generation, revealing the fundamental split-ring resonance as the nonlinear source.
ISSN:1539-4794
DOI:10.1364/ol.36.001533