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Publisher's Note: "Uniaxial magnetic anisotropy and magnetic switching in La0.67Sr0.33MnO3 thin films grown on vicinal SrTiO3(100)" [Appl. Phys. Lett. 82, 3731 (2003)]

Terahertz plasmonic high pass filter

Appl. Phys. Lett. 83, 201 (2003); doi:10.1063/1.1591083

Issue Date: 7 July 2003

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Dongmin Wu, Nicholas Fang, Cheng Sun, and Xiang Zhang
Department of Mechanical and Aerospace Engineering, University of California at Los Angeles, 420 Westwood Plaza, Los Angeles, California 90095

Willie J. Padilla, Dimitri N. Basov, David R. Smith, and Sheldon Schultz
Department of Physics, University of California at San Diego, 9500 Gilman Drive, La Jolla, California 92093
Metamaterials, which contain engineered subwavelength microstructures, can be designed to have positive or negative epsilon and µ at desired frequencies. In this letter, we demonstrate a metamaterial which has a "plasmonic" response to electromagnetic waves in the terahertz (THz) range. The sharp change of reflection and transmission at this plasma frequency makes the structure a high pass filter. The reflection response is characterized by Fourier transform infrared spectroscopy, and a plasma frequency at 0.7 THz is observed, which agrees with the theoretical calculation. The metamaterial is a two-dimensional cubic lattice consisting of thin metal wires, having wire diameter of 30 µm, lattice constant of 120 µm, and wire length of 1 mm. The microstereolithography technique is employed to fabricate the high-aspect-ratio lattice. ©2003 American Institute of Physics.
History: Received 13 January 2003; accepted 15 May 2003
Permalink: http://link.aip.org/link/?APPLAB/83/201/1
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KEYWORDS and PACS

Keywords
PACS
  • 42.79.Ci
    Optical filters, zone plates, and polarizers including spatial filters
  • YEAR: 2003

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ISSN:
0003-6951 (print)   1077-3118 (online)
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