Communication: Advanced Optical Materials

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Broadband Terahertz Plasmonic Response of Touching InSb Disks

  1. S. M. Hanham1,*,
  2. A. I. Fernández-Domínguez1,
  3. J. H. Teng3,
  4. S. S. Ang3,
  5. K. P. Lim4,
  6. S. F. Yoon4,
  7. C. Y. Ngo3,
  8. N. Klein2,
  9. J. B. Pendry1,
  10. S. A. Maier1,*

Article first published online: 16 JUL 2012

DOI: 10.1002/adma.201202003

Issue

Advanced Materials

Advanced Materials

Volume 24, Issue 35, pages OP226–OP230, September 11, 2012

Additional Information

How to Cite

Hanham, S. M., Fernández-Domínguez, A. I., Teng, J. H., Ang, S. S., Lim, K. P., Yoon, S. F., Ngo, C. Y., Klein, N., Pendry, J. B. and Maier, S. A. (2012), Broadband Terahertz Plasmonic Response of Touching InSb Disks. Adv. Mater., 24: OP226–OP230. doi: 10.1002/adma.201202003

Author Information

  1. 1

    Dept. of Physics, Imperial College London, South Kensington, London, SW7 2AZ, UK

  2. 2

    Dept. of Materials, Imperial College London, South Kensington, London, SW7 2AZ, UK

  3. 3

    Institute of Materials Research and Engineering, A*STAR, 3 Research Link, Singapore 117602, Singapore

  4. 4

    Sch. of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore

*Dept. of Physics, Imperial College London, South Kensington, London, SW7 2AZ, UK.

Publication History

  1. Issue published online: 4 SEP 2012
  2. Article first published online: 16 JUL 2012
  3. Manuscript Revised: 18 JUN 2012
  4. Manuscript Received: 18 MAY 2012

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Keywords:

  • surface plasmon resonance;
  • microstructures;
  • semiconducting materials
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The plasmonic behavior of dimers of touching semiconductor disks is studied experimentally in the difficult-to-realize regime where the disks are only marginally overlapping. Previous theoretical studies have shown that this geometry exhibits a highly efficient broadband response that may be very promising for light harvesting and sensing applications. By taking advantage of the plasmonic character of InSb in the terahertz regime, we experimentally confirm this broadband response and describe the associated strong field enhancement and sub-micrometer field confinement between the disks.

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