Abstract
Based on existing model for dielectric function of an effective medium
in response to H}-polarized (TE) mode, we have developed a new comprehensive analytic
model for dielectric function ɛTE of an individual multi-wall carbon nanotube (MWCNT)
that satisfies the Kramers-Kronig relation. Taking advantage of this model
and utilizing the 2D Finite difference time domain (FDTD) method we have calculated
the photonic response of β-aligned ordered arrays of MWCNTs to TE mode, over the frequency
range of 0.5–10 PHz. Dependence of the photonic response on the lattice
periodicity, CNTs' inner and outer radii, and the lattice orientation with
respect to the propagation direction have been studied, systematically. Furthermore,
using an existing model for ɛTM, similar dependencies for the photonic response to E-polarized
(TM) mode, have also been obtained. The numerical results can be used in designing
photonic devices applicable in the range of near to deep UV, such as filtering,
switching, superlensing, plasmonic antennas, and optical sensors.
© 2013 IEEE
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