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Experimental demonstration of frequency-agile terahertz metamaterials

Publication ,  Journal Article
Chen, HT; O'Hara, JF; Azad, AK; Taylor, AJ; Averitt, RD; Shrekenhamer, DB; Padilla, WJ
Published in: Nature Photonics
May 1, 2008

Metamaterials exhibit numerous novel effects and operate over a large portion of the electromagnetic spectrum. Metamaterial devices based on these effects include gradient-index lenses, modulators for terahertz radiation and compact waveguides. The resonant nature of metamaterials results in frequency dispersion and narrow bandwidth operation where the centre frequency is fixed by the geometry and dimensions of the elements comprising the metamaterial composite. The creation of frequency-agile metamaterials would extend the spectral range over which devices function and, further, enable the manufacture of new devices such as dynamically tunable notch filters. Here, we demonstrate such frequency-agile metamaterials operating in the far-infrared by incorporating semiconductors in critical regions of metallic split-ring resonators. For this first-generation device, external optical control results in tuning of the metamaterial resonance frequency by 20%. Our approach is integrable with current semiconductor technologies and can be implemented in other regions of the electromagnetic spectrum. © 2008 Nature Publishing Group.

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Published In

Nature Photonics

DOI

EISSN

1749-4893

ISSN

1749-4885

Publication Date

May 1, 2008

Volume

2

Issue

5

Start / End Page

295 / 298

Related Subject Headings

  • Optoelectronics & Photonics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

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Chen, H. T., O’Hara, J. F., Azad, A. K., Taylor, A. J., Averitt, R. D., Shrekenhamer, D. B., & Padilla, W. J. (2008). Experimental demonstration of frequency-agile terahertz metamaterials. Nature Photonics, 2(5), 295–298. https://doi.org/10.1038/nphoton.2008.52
Chen, H. T., J. F. O’Hara, A. K. Azad, A. J. Taylor, R. D. Averitt, D. B. Shrekenhamer, and W. J. Padilla. “Experimental demonstration of frequency-agile terahertz metamaterials.” Nature Photonics 2, no. 5 (May 1, 2008): 295–98. https://doi.org/10.1038/nphoton.2008.52.
Chen HT, O’Hara JF, Azad AK, Taylor AJ, Averitt RD, Shrekenhamer DB, et al. Experimental demonstration of frequency-agile terahertz metamaterials. Nature Photonics. 2008 May 1;2(5):295–8.
Chen, H. T., et al. “Experimental demonstration of frequency-agile terahertz metamaterials.” Nature Photonics, vol. 2, no. 5, May 2008, pp. 295–98. Scopus, doi:10.1038/nphoton.2008.52.
Chen HT, O’Hara JF, Azad AK, Taylor AJ, Averitt RD, Shrekenhamer DB, Padilla WJ. Experimental demonstration of frequency-agile terahertz metamaterials. Nature Photonics. 2008 May 1;2(5):295–298.

Published In

Nature Photonics

DOI

EISSN

1749-4893

ISSN

1749-4885

Publication Date

May 1, 2008

Volume

2

Issue

5

Start / End Page

295 / 298

Related Subject Headings

  • Optoelectronics & Photonics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 02 Physical Sciences
  • 01 Mathematical Sciences