| DOI | Resolve DOI: https://doi.org/10.1117/12.2040335 |
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| Author | Search for: Heggie, Tanner J.; Search for: Naylor, David A.; Search for: Gom, Brad G.; Search for: Bordatchev, Evgueni V.1 |
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| Affiliation | - National Research Council of Canada. Automotive and Surface Transportation
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| Format | Text, Article |
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| Conference | New Developments in THz, RF, Millimeter-Waves, and Sub-Millimeter Waves III, February 1 2014, San Fransisco, CA |
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| Subject | Plasmonics; bullseye lens; terahertz; micromilling; subwavelength imaging; surface plasmons |
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| Abstract | A major limitation in terahertz (THz) imaging applications is the relatively poor diffraction limited spatial resolution. A common approach to achieve subwavelength resolution is near-field imaging using a subwavelength aperture, but the low transmission efficiency through the aperture limits the sensitivity of this method. Bullseye structures, consisting of a single subwavelength circular aperture surrounded by concentric periodic corrugations, have been shown to enhance transmission through subwavelength apertures. At optical wavelengths, the fabrication of bullseye structures has been traditionally achieved by lithographic or chemical processes. Since the scale of plasmonic structures depends on the incident wavelength, precision micromilling techniques are well suited for THz applications. In this paper we describe a diamond micromilling process for the fabrication a plasmonic lenses operating at 325 GHz. Theoretical simulations are obtained using an FDTD solver and the performance of the lens is measured using a customized THz test bed. |
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| Publication date | 2014 |
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| Series | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21275919 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 0fc8d866-f537-4616-8fad-627fa83b2602 |
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| Record created | 2015-08-06 |
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| Record modified | 2020-04-22 |
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