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|Title:||Extremely high extinction ratio terahertz broadband polarizer using bilayer subwavelength metal wire-grid structure|
|Source:||Deng, L.Y., Teng, J.H., Zhang, L., Wu, Q.Y., Liu, H., Zhang, X.H., Chua, S.J. (2012-07-02). Extremely high extinction ratio terahertz broadband polarizer using bilayer subwavelength metal wire-grid structure. Applied Physics Letters 101 (1) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.4729826|
|Abstract:||We report a broadband terahertz (THz) polarizer exhibiting extremely high polarization extinction ratio and the method to fabricate it. The polarizer consists of a bilayer subwavelength Au wire-grid structure fabricated on Si substrate by one step etching and metal formation. The THz time domain spectroscopy (THz-TDS) measurement reveals an extremely high extinction ratio of 84.9 dB at 1.67 THz, close to the detection limit of THz-TDS system, and an average extinction ratio of 69.9 dB in 0.6-3 THz frequency range. The fabricated bilayer wire-grid polarizer shows greatly enhanced performance over conventional single layer wire-grid THz polarizer. © 2012 American Institute of Physics.|
|Source Title:||Applied Physics Letters|
|Appears in Collections:||Staff Publications|
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