Baragwanath, A.J. and Freeman, J.R. and Gallant, A.J. and Zeitler, J.A. and Beere, H.E. and Ritchie, D.A. and Chamberlain, J.M. (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. Piscataway: IEEE, 1 -2. International Conference on Infrared, Millimeter, and Terahertz Waves : proceedings.
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.
|Item Type:||Book chapter|
|Full text:||Full text not available from this repository.|
|Publisher Web site:||https://doi.org/10.1109/ICIMW.2010.5612861|
|Date accepted:||No date available|
|Date deposited:||No date available|
|Date of first online publication:||28 October 2010|
|Date first made open access:||No date available|
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