Far-field analysis of axially symmetric three-dimensional directional cloaks.

Ciracì, Cristian

Urzhumov, Yaroslav

Smith, David R

United States

2013-07-11T23:02:11Z

2013-04-22

Axisymmetric radiating and scattering structures whose rotational invariance is broken by non-axisymmetric excitations present an important class of problems in electromagnetics. For such problems, a cylindrical wave decomposition formalism can be used to efficiently obtain numerical solutions to the full-wave frequency-domain problem. Often, the far-field, or Fraunhofer region is of particular interest in scattering cross-section and radiation pattern calculations; yet, it is usually impractical to compute full-wave solutions for this region. Here, we propose a generalization of the Stratton-Chu far-field integral adapted for 2.5D formalism. The integration over a closed, axially symmetric surface is analytically reduced to a line integral on a meridional plane. We benchmark this computational technique by comparing it with analytical Mie solutions for a plasmonic nanoparticle, and apply it to the design of a three-dimensional polarization-insensitive cloak.

This work was supported by the Air Force Office of Scientific Research (AFOSR, Grant No. FA9550-09-1-0562) and by the Army Research Office through a Multidisciplinary University Research Initiative (Grant No. W911NF-09-1-0539). #

http://www.ncbi.nlm.nih.gov/pubmed/23609650

252540

1094-4087

https://hdl.handle.net/10161/7577

eng

en_US

The Optical Society

Opt Express

Optics Express

Computer Simulation

Light

Models, Theoretical

Refractometry

Scattering, Radiation

Surface Plasmon Resonance

Far-field analysis of axially symmetric three-dimensional directional cloaks.

Journal article

8

21

http://www.ncbi.nlm.nih.gov/pubmed/23609650

9397

9406

8

Duke

Electrical and Computer Engineering

Pratt School of Engineering

Published

21