Laser & Optoelectronics Progress, Volume. 55, Issue 4, 041602(2018)
Broadband Terahertz Polarization Converter Based on L-Shaped Metamaterial
A broadband reflection polarization converter in the terahertz frequency regime is proposed based on the L-shaped microstructured cell arrays. The characteristics of this polarization converter composed of L-shaped microstructured cell array, dielectric layer, and metal plates are numerically analyzed. The results demonstrate that the proposed polarization converter can not only convert a linearly polarized (LP) wave into a cross-polarized wave, but also convert LP waves into circularly polarized (CP) waves at two specific frequencies. In the frequency range of 0.64-1.19 THz, the polarization conversion ratio (PCR) is more than 80%, and the maximum PCR is more than 95%. In addition, the proposed converter can maintain a good polarization conversion performance under certain oblique incidence conditions.
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Lu Zhou, Guozhong Zhao, Yonghua Li. Broadband Terahertz Polarization Converter Based on L-Shaped Metamaterial[J]. Laser & Optoelectronics Progress, 2018, 55(4): 041602
Category: Materials
Received: Oct. 25, 2017
Accepted: --
Published Online: Sep. 11, 2018
The Author Email: Zhao Guozhong (zhao@126.com)