Journal
APPLIED PHYSICS LETTERS
Volume 104, Issue 11, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4869127
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Funding
- SONS Project
- ONERA
- Delegation Generale de l'Armement
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In this Letter, we demonstrate both theoretically and experimentally that plasmonic planar L-shaped antenna can nearly totally convert the linear polarization of light with a high efficiency in the infrared (3-5 mu m). The nanoantenna geometry is engineered so that the polarization conversion occurred on a 1 mu m-wide band ([3.25-4.25] mu m) with a mean polarization conversion ratio of 95%. We show that this effect is due to two localized resonances in the L-shaped antenna, which wavelengths are tunable with the in-plane geometry of the nanoantenna. Eventually, the angular independence of the polarization conversion effect is evidenced. (C) 2014 AIP Publishing LLC.
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