用于宽带太赫兹光谱的聚合物薄膜上的高性能金属网格偏振器

2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz) Pub Date : 2021-08-29 DOI:10.1109/IRMMW-THz50926.2021.9567316

S. Kuznetsov, A. V. Gelfand, A. Mamrashev, F. Minakov, N. Nikolaev

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引用次数: 0

摘要

研制了基于一维金属栅格的高性能宽带太赫兹偏振器。采用太赫兹时域谱法研究了它们在0.2-2太赫兹范围内的透射功率(PT)和消光比(ER)。在4 μm厚聚丙烯薄膜上的双偏振片串联结构显示出最佳的整体特性:PT为95%，而ER超出了系统动态范围(107:1 ~ 104:1)。所研制的偏振器可用于各向异性和光学活性材料的偏振敏感测量。

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High-Performance Metal-Grid Polarizers on Polymeric Films for Broadband Terahertz Spectroscopy

The high-performance broadband terahertz polarizers based on one-dimensional metal grids on carrying thin-film polymeric substrates were developed and manufactured. THz time-domain spectroscopy was used to study their power transmission (PT) and extinction ratio (ER) in the range of 0.2–2 THz. A tandem structure of two polarizers patterned on top of 4-μm-thick polypropylene film showed the best overall characteristics: PT > 95%, while ER exceeded the system dynamic range which spanned from 107:1 to 104:1. The developed polarizers can be used for polarization-sensitive measurements of anisotropic and optically active materials.

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来源期刊

2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz)

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