Journal
OPTICS LETTERS
Volume 40, Issue 11, Pages 2645-2648Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.40.002645
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Funding
- German Federal Ministry of Education and Research (PhoNa) [03IF2101A]
- German Science Foundation [RO 3640/3-1]
- Thuringian State Government (MeMa) [PE116-1]
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A nanoantenna with balanced electric and magnetic dipole moments, known as the first Kerker condition, exhibits a directive radiation pattern with zero backscattering. In principle, a nanoantenna can provide even better directionality if higher order moments are properly balanced. Here, we study a generalized Kerker condition in the example of a nanoring nanoantenna supporting electric dipole and electric quadrupole moments. Nanoring antennas are well suited since both multipole moments can be almost independently tuned to meet the generalized Kerker condition. (C) 2015 Optical Society of America
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