Optics & Laser Technology ( IF 4.6 ) Pub Date : 2021-11-17 , DOI: 10.1016/j.optlastec.2021.107669 Takenori Tanno 1 , Ryo Shimada 2 , Takumu Takaya 3 , Wataru Sasaki 2 , Manabu Yamada 2 , Emi Adachi 1 , Shinichi Yodokawa 2 , Toru Kurabayashi 2
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A terahertz linear polarizer was developed using a single crystal of methyl 4-nitrobenzoate. Flat molecules are arranged in parallel in the crystal and the intramolecular vibrations efficiently absorb terahertz waves with high anisotropy. Several infrared-active intramolecular vibrations with parallel moments of transition concentrate in a frequency band between 2.2 and 3.2 THz. The highest degree of polarization of 76% was achieved at 2.74 THz (Tmax = 80%, Tmin = 11%). This result establishes a new category of polarizer that can be manufactured in a simple process at low cost.
中文翻译：
由有机单晶制成的太赫兹线性偏光片
使用 4-硝基苯甲酸甲酯单晶开发了太赫兹线性偏振器。扁平分子在晶体中平行排列，分子内振动有效地吸收具有高各向异性的太赫兹波。几个具有平行跃迁矩的红外活性分子内振动集中在 2.2 和 3.2 THz 之间的频带中。在 2.74 THz（T max = 80%，T min = 11%）时实现了 76% 的最高极化度。这一结果建立了一种新的偏振器类别，可以通过简单的工艺以低成本制造。
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