Optical properties of split ring resonator metamaterial structures on semiconductor substrates

N.P. Johnson, B. Lahiri, A.Z. Khokhar, M. Richard, S. McMeekin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Metamaterials based on single-layer metallic Split Ring Resonators (SRR) and Wires have been demonstrated to have a resonant response in the near infra-red wavelength range. The use of semiconductor substrates gives the potential for control of the resonant properties of split-ring resonator (SRR) structures by means of active changes in the carrier concentration obtained using either electrical injection or photo-excitation. We examine the influence of extended wires that are either parallel or perpendicular to the gap of the SRRs and report on an equivalent circuit model that provides an accurate method of determining the polarisation dependent resonant response for incident light perpendicular to the surface. Good agreement is obtained for the substantial shift observed in the position of the resonances when the planar metalisation is changed from gold to aluminium.
Original languageEnglish
Title of host publicationProceedings SPIE Conference Volume 6987
PublisherSPIE
Pages69871F
DOIs
Publication statusPublished - 2008

Publication series

NameMetamaterials III

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Keywords

  • semiconductor materials
  • split ring resonators
  • polarization

Cite this

Johnson, N. P., Lahiri, B., Khokhar, A. Z., Richard, M., & McMeekin, S. (2008). Optical properties of split ring resonator metamaterial structures on semiconductor substrates. In Proceedings SPIE Conference Volume 6987 (pp. 69871F ). (Metamaterials III). SPIE. https://doi.org/10.1117/12.786356