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.

doi:10.1109/icimw.2010.5612861

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.

Authors

A.J. Baragwanath

J.R. Freeman

Professor Andrew Gallant a.j.gallant@durham.ac.uk
Professor

J.A. Zeitler

H.E. Beere

D.A. Ritchie

J.M. Chamberlain

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