Complementary planar terahertz metamaterials
Author(s) -
HouTong Chen,
John F. O’Hara,
Antoinette J. Taylor,
Richard D. Averitt,
Clark Highstrete,
Mark Lee,
Willie J. Padilla
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.001084
Subject(s) - terahertz radiation , metamaterial , split ring resonator , optics , planar , terahertz spectroscopy and technology , resonator , electric field , materials science , optoelectronics , physics , computer science , computer graphics (images) , quantum mechanics
Planar electric split ring resonator (eSRR) metamaterials and their corresponding inverse structures are designed and characterized computationally and experimentally utilizing finite element modeling and THz time domain spectroscopy. A complementary response is observed in transmission. Specifically, for the eSRRs a decrease in transmission is observed at resonance whereas the inverse structures display an increase in transmission. The frequency dependent effective complex dielectric functions are extracted from the experimental data and, in combination with simulations to determine the surface current density and local electric field, provide considerable insight into the electromagnetic response of our planar metamaterials. These structures may find applications in the construction of various THz filters, transparent THz windows, or THz grid structures ideal for constructing THz switching/modulation devices.
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