Electric field enhancement of gold tip optical antenna with special geometry
Abstract
This paper provides a new design for a gold tip optical antenna based on a specific geometry, and then, the change of electric field enhancement for plane wave laser excitation with 400 to 700 nm in the vicinity of optical antenna are simulated. Progressions of geometry incorporate the change of period of circular grating from 200–300 nm, on the shaft of antenna. In addition, the distribution of enhancement of the electric field in a plane perpendicular to the shaft has been acquired. Finally, the optimal value for the maximum enhancement at the period of 208.843 nm is calculated.
Supporting agencies: The authors wish to thank prof. R. H. Gajnutdinov, for helpful discussions. We are also grateful to Department of Optics and Nanophotonics, Kazan Federal University for giving us access to their equipment.
About the Author
M. Zohrabi
Department of Optics and Nanophotonics, Institute of Physics, Kazan Federal University
Russian Federation
Russian Federation
Kazan
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Review
For citations:
Zohrabi M. Electric field enhancement of gold tip optical antenna with special geometry. Nanosystems: Physics, Chemistry, Mathematics. 2014;5(5):677-684.
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