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Design and experimental demonstration of a plasmonic directional beaming device |
JOSA B, Vol. 29, Issue 8, pp. 2255-2259 (2012)
http://dx.doi.org/10.1364/JOSAB.29.002255
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Abstract
We design and demonstrate experimentally a plasmonic directional beaming device with an expected beam angle, which consists of a slit-grooves structure in Au/Cr metal layers. The directional beaming phenomenon is achieved by modulating the phases of the radiation light diffracted by grooves from surface plasmon polariton and controlling the wavefront of the transmitted light to propagate toward the desired direction. The transmitted field through the demonstration beaming device is simulated with finite-difference time-domain method and visualized using scanning near-field optical microscope. The simulation and experimental results both show a significant directional beaming effect and are in good agreement with theoretical expectation. Such a plasmonic beaming device has potential applications in optical interconnection, display, and illumination.
© 2012 Optical Society of America
OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(240.6680) Optics at surfaces : Surface plasmons
(050.6624) Diffraction and gratings : Subwavelength structures
ToC Category:
Optics at Surfaces
History
Original Manuscript: May 17, 2012
Revised Manuscript: July 1, 2012
Manuscript Accepted: July 2, 2012
Published: August 1, 2012
Citation
Fenghuan Hao, Mingqian Zhang, Qingyan Wang, Jia Wang, Rui Wang, and Huiliang Ge, "Design and experimental demonstration of a plasmonic directional beaming device," J. Opt. Soc. Am. B 29, 2255-2259 (2012)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-29-8-2255
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