Optical properties of split ring resonator metamaterial structures on semiconductor substrates

Johnson, N.P., Lahiri, B., Khokhar, A.Z., De La Rue, R.M. and McMeekin, S. (2008) Optical properties of split ring resonator metamaterial structures on semiconductor substrates. Proceedings of the SPIE: The International Society for Optical Engineering, 6987(69871F), (doi: 10.1117/12.786356)

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.

• Item Type: Articles
• Additional Information: Copyright 2008 Society of Photo-Optical Instrumentation Engineers. This paper will be published in Proceedings of SPIE 6987 and is made available as an electronic reprint (preprint) with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Johnson, Dr Nigel and De La Rue, Professor Richard
• Authors: Johnson, N.P., Lahiri, B., Khokhar, A.Z., De La Rue, R.M., and McMeekin, S.
• Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: Proceedings of the SPIE: The International Society for Optical Engineering
• Publisher: SPIE - The International Society for Optical Engineering
• ISSN: 0277-786X
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher including additional information statement.