Title: Mid-IR plasmonic antennas on silicon-rich oxinitride absorbing substrates: Nonlinear scaling of resonance wavelengths with antenna length
Authors: Sikola, T ×
Kekatpure, R. D
Barnard, E. S
White, J. S
Van Dorpe, Pol
Brinek, L
Tomanec, O
Zlamal, J
Lei, D. Y
Sonnefraud, Y
Maier, S. A
Humlicek, J
Brongersma, M. L #
Issue Date: Dec-2009
Publisher: Amer inst physics
Series Title: Applied physics letters vol:95 issue:25
Article number: 253109
Abstract: We report on the resonant properties of platinum dipole antennas fabricated on a silicon-rich-oxinitride thin film that exhibits significant absorption in the mid-infrared of the electromagnetic spectrum (lambda(-1) approximate to 1100 cm(-1)). A nonlinear scaling between the resonant wavelength and the antenna length has been found and quantitatively confirmed by full-field electromagnetic simulations. The resonant wavelength increases linearly with antenna length for small lengths and tends to saturate for large ones (length > 4 mu m). This saturation effect is attributed to the coupling of a geometrical antenna resonance and an absorption resonance of the substrate material. (C) 2009 American Institute of Physics. [doi:10.1063/1.3278593]
ISSN: 0003-6951
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Associated Section of ESAT - INSYS, Integrated Systems
× corresponding author
# (joint) last author

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