Broadband Characterization of THz Frequency High Fill-Factor Substrate-Based Wire-Grid Polarizers with High Extinction Ratios
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Recent simulation and experimental work has resulted in the realization of low-cost, substrate-based, THz wire-grid polarizers fabricated on crystalline-quartz substrates that exhibit both high extinction ratios and low insertion losses. The broad bandwidth performance of these high fill-factor wire-grid polarizers are characterized using terahertz time-domain spectroscopic techniques over a frequency range spanning from 0.25 to 2 THz. The polarizers exhibited extinction ratios as high as 50 dB at low frequencies and 30 dB at higher ones.
Hendrix, R. M.,
Middendorf, J. R.,
Cetnar, J. S.,
Deibel, J. A.,
& Brown, E. R.
(2014). Broadband Characterization of THz Frequency High Fill-Factor Substrate-Based Wire-Grid Polarizers with High Extinction Ratios. 39th International Conference on Infrared, Millimeter, and Terahertz Waves.