期刊
OPTICS EXPRESS
卷 21, 期 13, 页码 15464-15474出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.21.015464
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资金
- Flemish Government
- Fund for Scientific Research Flanders (FWO-V)
- Mandat d'Impulsion Scientifique of the F.R.S. - FNRS
- Credit de demarrage, U.Lg
- EPSRC [EP/G060649/1]
- EPSRC [EP/G060649/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/G060649/1] Funding Source: researchfish
We have studied both theoretically and experimentally symmetric and asymmetric planar metallic Split Ring Resonators. We demonstrate that introducing structural asymmetry makes it possible to excite several higher order modes of both even (l = 2) and odd (l = 3, 5) order, which are otherwise inaccessible for a normally incident plane wave in symmetric structures. Experimentally we observe that the even mode resonances of asymmetric resonators have a quality factor 5.8 times higher than the higher order odd resonances. (C) 2013 Optical Society of America
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