Journal
NANO LETTERS
Volume 8, Issue 11, Pages 4048-4052Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl802981q
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Funding
- National Science Foundation [DMR 0606472]
- Army Research Office
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We demonstrate control of the surface plasmon polariton wavevector in an active metal-dielectric plasmonic interferometer by utilizing electrooptic barium titanate as the dielectric layer. Arrays of subwavelength interferometers were fabricated from pairs of parallel slits milled in silver on barium titanate thin films. Plasmon-mediated transmission of incident light through the subwavelength slits is modulated by an external voltage applied across the barium titanate thin film. Transmitted light modulation is ascribed to two effects, electrically induced domain switching and electrooptic modulation of the barium titanate index.
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