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Metal-dielectric-metal plasmonic resonators for active beam steering in the infrared |
Optics Letters, Vol. 38, Issue 6, pp. 983-985 (2013)
http://dx.doi.org/10.1364/OL.38.000983
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Abstract
Active beam-steering devices near the optical frequencies have long been sought after due to their applications in communication, defense, and display technologies; however, the challenge lies in achieving actively tunable structures near these frequencies. An array of metal-dielectric-metal plasmonic resonators is demonstrated as a dynamic beam-steering device to operate at midinfrared wavelengths. We numerically demonstrate continuous-angle beam steering of 8.75° by making use of tunable properties of silicon as the active dielectric. The proposed device achieves a refractive index insensitive divergence angle and it operates in a 650 nm wide spectral window around 10 μm wavelength. The results of this Letter pave the way to exploiting active beam steering in various applications at midinfrared wavelengths.
© 2013 Optical Society of America
OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(230.4555) Optical devices : Coupled resonators
(230.6046) Optical devices : Smart pixel systems
(310.6628) Thin films : Subwavelength structures, nanostructures
(110.1080) Imaging systems : Active or adaptive optics
ToC Category:
Optical Devices
History
Original Manuscript: November 19, 2012
Manuscript Accepted: January 31, 2013
Published: March 14, 2013
Citation
Enes Battal and Ali Kemal Okyay, "Metal-dielectric-metal plasmonic resonators for active beam steering in the infrared," Opt. Lett. 38, 983-985 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-6-983
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