Plasmonic apertures for THz QCL near-field imaging

Baragwanath, A.J.; Freeman, J.R.; Gallant, A.J.; Zeitler, J.A.; Beere, H.E.; Ritchie, D.A.; Chamberlain, J.M.

Abstract

In this paper we report on the fabrication and testing of sub-wavelength apertures surrounded by annular plasmonic structures, for use in near-field imaging with a QCL source. Both double corrugated structures and planarised designs have been tested, with the latter producing a spatially uniform far-field emission profile. Greatly increased transmission has been observed when using plasmonic apertures over standard plain apertures. Sub-wavelength resolution has been measured with a standard, near-field knife-edge test.

Citation

Baragwanath, A., Freeman, J., Gallant, A., Zeitler, J., Beere, H., Ritchie, D., & Chamberlain, J. (2010). Plasmonic apertures for THz QCL near-field imaging. In 35th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2010) : 5 - 10 September 2010, Angelicum, Rome, Italy (1 -2). https://doi.org/10.1109/icimw.2010.5612861

• Conference Name: 2010 35th International Conference on Infrared Millimeter and Terahertz Waves (IRMMW-THz 2010)
• Conference Location: Rome, Italy
• Start Date: Sep 5, 2010
• End Date: Sep 10, 2010
• Online Publication Date: Oct 28, 2010
• Publication Date: Oct 28, 2010
• Deposit Date: Jun 10, 2011
• Pages: 1 -2
• Series Title: International Conference on Infrared, Millimeter, and Terahertz Waves : proceedings.
• Series ISSN: 2162-2027,2162-2035
• Book Title: 35th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2010) : 5 - 10 September 2010, Angelicum, Rome, Italy.
• DOI: https://doi.org/10.1109/icimw.2010.5612861