Sancho-Parramon, Jordi; Bosch, Salvador (2012) Dark modes and Fano resonances in plasmonic clusters excited by cylindrical vector beams. ACS Nano, 6 (9). pp. 8415-8423. ISSN 1936-0851
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Abstract
Control of the polarization distribution of light allows tailoring the electromagnetic response of plasmonic particles. By rigorously extending the generalized multiparticle Mie theory, we show that focused cylindrical vector beams (CVB) can be used to efficiently excite dark plasmon modes in nanoparticle clusters. In addition to the small radiative damping and large field enhancement associated to dark modes, excitation with CVB can give place to unusual phenomenology like the formation of electromagnetic cold spots and the generation of Fano resonances in highly symmetric clusters. Overall, the results show the potential of CVB to tailor the plasmonic response of nanoparticle clusters in a unique way.
| Item Type: | Article | ||||||||
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| Uncontrolled Keywords: | surface plasmon resonance,; cylindrical vector beams; focused illumination; nanoparticle; plasmon hybridization; subradiance; near-field enhancement; Fano resonance; electromagnetic cold spots | ||||||||
| Subjects: | NATURAL SCIENCES > Physics NATURAL SCIENCES > Physics > Atomic and Molecular Physics NATURAL SCIENCES > Chemistry > Physical Chemistry |
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| Divisions: | Division of Laser and Atomic Research and Development | ||||||||
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| Depositing User: | Jordi Sancho Parramon | ||||||||
| Date Deposited: | 30 Nov 2015 14:02 | ||||||||
| URI: | http://fulir.irb.hr/id/eprint/2333 | ||||||||
| DOI: | 10.1021/nn303243p |
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