Arikawa Takashi, Wang Xiangfeng, Belyanin Alexey A, Kono Junichiro
Department of Electrical & Computer Engineering, Rice University, Houston, Texas 77005, USA.
Opt Express. 2012 Aug 13;20(17):19484-92. doi: 10.1364/OE.20.019484.
We report on a giant Faraday effect in an electron plasma in n-InSb probed via polarization-resolved terahertz (THz) time-domain spectroscopy. Polarization rotation angles and ellipticities reach as large as π/2 and 1, respectively, over a wide frequency range (0.3-2.5 THz) at magnetic fields of a few Tesla. The experimental results together with theoretical simulations show its promising ability to construct broadband and tunable THz polarization optics, such as a circular polarizer, half-wave plate, and polarization modulators.
我们报道了通过偏振分辨太赫兹（THz）时域光谱法探测的n-InSb中电子等离子体的巨大法拉第效应。在几特斯拉的磁场下，在宽频率范围（0.3 - 2.5 THz）内，偏振旋转角和椭圆率分别高达π/2和1。实验结果与理论模拟表明，它有能力构建宽带和可调谐的太赫兹偏振光学器件，如圆偏振器、半波片和偏振调制器。
