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Proceedings Paper

Terahertz metamaterials for active, tunable, and dynamic devices
Author(s): Nathan I. Landy; Hou-Tong Chen; John F. O'Hara; Joshua M. O. Zide; Arthur C. Gossard; Clark Highstrete; Mark Lee; Antoinette J. Taylor; Richard D. Averitt; Willie J. Padilla
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Paper Abstract

Tunable electromagnetic metamaterials can be designed through the incorporation of semiconducting materials. We present theory, simulation, and experimental results of metamaterials operating at terahertz frequencies. Specific emphasis is placed on the demonstration of external control of planar arrays of metamaterials patterned on semiconducting substrates with terahertz time domain spectroscopy used to characterize device performance. Dynamical control is achieved via photoexcitation of free carriers in the substrate. Active control is achieved by creating a Schottkey diode, which enables modulation of THz Transmission by 50 percent, an order of magnitude improvement over existing devices. Because of the universality of metamaterial response over many decades of frequency, these results have implications for other regions of the electromagnetic spectrum and will undoubtedly play a key role in future demonstrations of novel high-performance devices.

Paper Details

Date Published: 21 May 2007
PDF: 8 pages
Proc. SPIE 6581, Metamaterials II, 65810P (21 May 2007); doi: 10.1117/12.724394
Show Author Affiliations
Nathan I. Landy, Boston College (United States)
Hou-Tong Chen, Los Alamos National Lab. (United States)
John F. O'Hara, Los Alamos National Lab. (United States)
Joshua M. O. Zide, Univ. of California, Santa Barbara (United States)
Arthur C. Gossard, Univ. of California, Santa Barbara (United States)
Clark Highstrete, Sandia National Labs. (United States)
Mark Lee, Sandia National Labs. (United States)
Antoinette J. Taylor, Los Alamos National Lab. (United States)
Richard D. Averitt, Boston Univ. (United States)
Willie J. Padilla, Boston College (United States)

Published in SPIE Proceedings Vol. 6581:
Metamaterials II
Vladimir Kuzmiak; Peter Markos; Tomasz Szoplik, Editor(s)

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