Journal
PLASMONICS
Volume 8, Issue 2, Pages 733-740Publisher
SPRINGER
DOI: 10.1007/s11468-012-9464-z
Keywords
Terahertz radiation; Extraordinary optical transmission; Waveguides
Funding
- NSF [1128086]
- NSFC [51001029]
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1128086] Funding Source: National Science Foundation
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Compact and efficient terahertz (THz) polarization conversion components are of importance for applications where the small dimension of the laser device/system is critical. Here, we propose an ultracompact L-shaped subwavelength patterns on metal films to realize the THz polarization management. By optimizing the geometric parameters of single-layered and double-layered patterns, the linear-polarized THz incidence can be converted to elliptical polarized output or rotated by 90 degrees efficiently due to the THz extraordinary optical transmission phenomenon. The physical mechanism is explored by mode analysis using numerical and analytical modeling.
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