Terahertz linear polarizer made of an organic single crystal
Terahertz linear polarizer made of an organic single crystal
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由有机单晶制成的太赫兹线性偏振器
DOI：
10.1016/j.optlastec.2021.107669
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发表时间：
2022
影响因子：
5
通讯作者：
Kurabayashi Toru
中科院分区：
文献类型：
--
作者：
Tanno Takenori;Shimada Ryo;Takaya Takumu;Sasaki Wataru;Yamada Manabu;Adachi Emi;Yodokawa Shinichi;Kurabayashi Toru
利用4-硝基苯甲酸甲酯单晶研制了一种太赫兹线偏振器。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。几个红外活性分子内振动与过渡的平行时刻集中在2.2和3.2太赫兹之间的频带。在2.74 THz处获得最高偏振度76%（Tmax= 80%，Tmin = 11%）。这一结果建立了一种新的偏振器类别，可以在一个简单的过程中以低成本制造。
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.