Extraordinary optical transmission and extinction in a Terahertz wire-grid polarizer
A THz wire grid polarizer is simulated and demonstrated consisting of 40- μ m periodic aluminum strips mounted on a polycarbonate substrate with a variable metal-to-gap ratio. Full-wave numerical simulations were performed from 100GHz to 550GHz predicting that the transmission in perpendicular (para...
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| Veröffentlicht in: | Applied physics letters 2012-06, Vol.100 (23), p.231912-231912-3 |
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| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | A THz wire grid polarizer is simulated and demonstrated consisting of 40-
μ
m periodic aluminum strips mounted on a polycarbonate substrate with a variable metal-to-gap ratio. Full-wave numerical simulations were performed from 100GHz to 550GHz predicting that the transmission in perpendicular (parallel) polarization is much higher (lower) than that predicted by geometric optics, leading to a very high extinction ratio of ∼60dB between 100 and 550GHz when the gaps become very small ( |
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| ISSN: | 0003-6951 1077-3118 |
| DOI: | 10.1063/1.4724315 |