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Proceedings Paper

Ultrafast terahertz electric field polarization dynamics in metallic metastructures
Author(s): K. J. Chau; M. C. Quong; A. Y. Elezzabi
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Paper Abstract

In this work, we explore the interaction of terahertz electromagnetic pulses with chiral metallic mesostructures. In contrast to conventional continuous wave experiments conducted in the visible and microwave regimes, time-domain THz spectroscopy enables direct measurement of the electric field and polarization dynamics of electromagnetic waves propagated through the chiral structure. With this experimental methodology, we discover significant polarization circularization of the radiation scattered from a sub-wavelength sized helix in the axial configuration. Numerical simulations are in excellent quantitative agreement with the experimental results. Understanding light behaviour in a helical structure is not only of fundamental significance, but could potentially lead to the development of entirely new materials to improve communication and information technology.

Paper Details

Date Published: 8 February 2007
PDF: 9 pages
Proc. SPIE 6471, Ultrafast Phenomena in Semiconductors and Nanostructure Materials XI and Semiconductor Photodetectors IV, 64710P (8 February 2007); doi: 10.1117/12.699232
Show Author Affiliations
K. J. Chau, Univ. of Alberta (Canada)
M. C. Quong, Univ. of Alberta (Canada)
A. Y. Elezzabi, Univ. of Alberta (Canada)


Published in SPIE Proceedings Vol. 6471:
Ultrafast Phenomena in Semiconductors and Nanostructure Materials XI and Semiconductor Photodetectors IV
Marshall J. Cohen; Kong-Thon Tsen; Joseph P. Estrera; Jin-Joo Song, Editor(s)

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