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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 11 — May. 23, 2011
  • pp: 10138–10152

Terahertz scattering by subwavelength cylindrical arrays

Gretel M. Png, Christophe Fumeaux, Mark R. Stringer, Robert E. Miles, and Derek Abbott  »View Author Affiliations

Optics Express, Vol. 19, Issue 11, pp. 10138-10152 (2011)

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We demonstrate the use of a full-wave electromagnetic field simulator to verify terahertz (THz) transmission-mode spectroscopic measurements of periodic arrays containing subwavelength cylindrical scatterers. Many existing THz scattering studies utilize analytical solutions, which were developed for a single scatterer. For multiple scatterers, a scaling factor equal to the number of scatterers is applied, accounting for interference between far-field radiative contributions from those scatterers but not their near-field mutual coupling. Consequently, analytical solutions do not accurately verify measurements. Conversely, results from the full-wave electromagnetic field simulator elucidate our measurements well, and provide an important insight into how the scattering behavior of cylindrical scatterers is influenced by test conditions.

© 2011 OSA

OCIS Codes
(120.4290) Instrumentation, measurement, and metrology : Nondestructive testing
(290.5820) Scattering : Scattering measurements
(050.1755) Diffraction and gratings : Computational electromagnetic methods
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:

Original Manuscript: March 16, 2011
Revised Manuscript: April 25, 2011
Manuscript Accepted: April 26, 2011
Published: May 9, 2011

Virtual Issues
Vol. 6, Iss. 6 Virtual Journal for Biomedical Optics

Gretel M. Png, Christophe Fumeaux, Mark R. Stringer, Robert E. Miles, and Derek Abbott, "Terahertz scattering by subwavelength cylindrical arrays," Opt. Express 19, 10138-10152 (2011)

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