中国物理B ›› 2011, Vol. 20 ›› Issue (9): 94102-094102.doi: 10.1088/1674-1056/20/9/094102

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

Terahertz wave polarization rotation in bianisotropic metamaterials

施宇蕾, 周庆莉, 刘维, 赵冬梅, 李磊, 张存林   

  1. Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, Key Laboratory of Terahertz Optoelectronics of Ministry of Education, Department of Physics, Capital Normal University, Beijing 100048, China
  • 收稿日期:2011-03-04 修回日期:2011-04-03 出版日期:2011-09-15 发布日期:2011-09-15

Terahertz wave polarization rotation in bianisotropic metamaterials

Shi Yu-Lei(施宇蕾)†, Zhou Qing-Li(周庆莉), Liu Wei(刘维), Zhao Dong-Mei(赵冬梅), Li Lei(李磊), and Zhang Cun-Lin(张存林)   

  1. Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, Key Laboratory of Terahertz Optoelectronics of Ministry of Education, Department of Physics, Capital Normal University, Beijing 100048, China
  • Received:2011-03-04 Revised:2011-04-03 Online:2011-09-15 Published:2011-09-15

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摘要： Utilizing a polarization sensitive terahertz detection method where the detector is rotated by either 0° or 90° to measure the electric field Ep, s (t) of each polarization component, we have characterized the properties of split ring resonators. The strong polarization dependence of the bianisotropic-circular-current-driven and linear-polarization-induced resonances is in excellent agreement with the simulation when the p-polarized terahertz transmission is measured. However, these electromagnetic responses vanish when the s-polarized terahertz transmission is measured. There is only a transmission minimum at 1.64 THz and the terahertz polarization rotation angle of about 90° is observed. The polarized terahertz transmission amplitudes and spectra detected at orthogonal orientations show that these behaviours are probably attributed to the birefringent effect of the sample.

Abstract: Utilizing a polarization sensitive terahertz detection method where the detector is rotated by either 0° or 90° to measure the electric field Ep, s (t) of each polarization component, we have characterized the properties of split ring resonators. The strong polarization dependence of the bianisotropic-circular-current-driven and linear-polarization-induced resonances is in excellent agreement with the simulation when the p-polarized terahertz transmission is measured. However, these electromagnetic responses vanish when the s-polarized terahertz transmission is measured. There is only a transmission minimum at 1.64 THz and the terahertz polarization rotation angle of about 90° is observed. The polarized terahertz transmission amplitudes and spectra detected at orthogonal orientations show that these behaviours are probably attributed to the birefringent effect of the sample.

Key words: terahertz, metamaterials, birefringent effect, bianisotropic effect

中图分类号:  (Electromagnetic wave propagation; radiowave propagation)

  • 41.20.Jb
78.20.Ek (Optical activity) 42.25.Ja (Polarization)