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|Title:||Terahertz scattering by subwavelength cylindrical arrays|
|Citation:||Optics Express, 2011; 19(11):10138-10152|
|Publisher:||Optical Soc Amer|
|Gretel M. Png, Christophe Fumeaux, Mark R. Stringer, Robert E. Miles and Derek Abbott|
|Abstract:||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.|
|Keywords:||Surface Plasmon Resonance; Models, Theoretical; Terahertz Radiation; Terahertz Spectroscopy; Optics and Photonics; Algorithms; Radiation; Scattering, Radiation; Equipment Design|
|Rights:||© Copyright 2011 Optical Society of America|
|Appears in Collections:||Electrical and Electronic Engineering publications|
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