Journal
OPTICS EXPRESS
Volume 18, Issue 10, Pages 9780-9790Publisher
Optica Publishing Group
DOI: 10.1364/OE.18.009780
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Funding
- Paul Instrument
- EPSRC [EP/E01111X/1]
- EU
- EPSRC [EP/E01111X/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E01111X/1] Funding Source: researchfish
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We study optical properties of optomagnetic metamaterials produced by regular arrays of double gold dots (nanopillars). Using combined data of spectroscopic ellipsometry, transmission and reflection measurements, we identify localized plasmon resonances of a nanopillar pair and measure their dependences on dot sizes. We formulate the necessary condition at which an effective field theory can be applied to describe optical properties of a composite medium and employ interferometry to measure phase shifts for our samples. A negative phase shift for transmitted green light coupled to an antisymmetric magnetic mode of a double-dot array is observed. (C) 2010 Optical Society of America
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