Magnetically and electrically polarization-tunable THz emitter with integrated ferromagnetic heterostructure and large-birefringence liquid crystal
Magnetically and electrically polarization-tunable THz emitter with integrated ferromagnetic heterostructure and large-birefringence liquid crystal
复制标题
具有集成铁磁异质结构和大双折射液晶的磁和电极可调太赫兹发射器
DOI：
10.7567/apex.11.092101
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发表时间：
2018-09-01
影响因子：
2.3
通讯作者：
Nakajima, Makoto
中科院分区：
文献类型：
--
作者：
Qiu, Hongsong;Wang, Lei;Nakajima, Makoto
介绍了一种集铁磁异质结构和目标双折射液晶于一体的磁和电极化可调太赫兹发射器。异质结构和液晶电池分别作为宽带太赫兹源和相位延迟器。通过改变外加磁场的方向，可以在线性和圆形之间切换极化状态。频率高于1thz的相位延迟可以通过施加低电压在pi/2的范围内连续调节。这种紧凑，宽带，经济，易于调节的太赫兹发射器可以广泛用于偏振敏感的研究和工程应用。(C) 2018日本应用物理学会
A magnetically and electrically polarization-tunable terahertz emitter that integrates a ferromagnetic heterostrueture and targe-birefringence liquid crystals is demonstrated. The heterostrueture and the liquid crystal cell act as the broadband terahertz source and the phase retarder, respectively. The polarization state is switched between linear and circular by changing the direction of the external magnetic field. The phase retardation for frequencies higher than 1 THz is continuously adjustable over a range of pi/2 by applying a low voltage. This compact, broadband, economical, and easy-to-regulate terahertz emitter can be widely used in polarization-sensitive research and engineering applications. (C) 2018 The Japan Society of Applied Physics