Chiral response of a metasurface composed of nanoholes and tilted nanorods

Aba Tudahong; Qu Yu; Abudukelimu Abuduwaili; Ullah Hamad; Zhang Zhongyue

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Chiral response of a metasurface composed of nanoholes and tilted nanorods

机译：由纳米孔和倾斜纳米棒组成的元曲面的手性反应

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Circular dichroism (CD) of metasurfaces has been used in biological monitoring, analytical chemistry, and perfect polarization converters. In this work, a metasurface consisting of nanoholes and tilted nanorods is proposed to achieve the CD effect. Numerical calculations show that electrical current forms between the film and the tilted nanorods under circularly polarized light illumination, and CD effects originate from the coupling between the current oscillations at the film and those on the tilted nanorods. This electrical oscillation mode provides unique coupling mechanisms for the CD effect. In addition, CD is strongly dependent on the structural parameters, and the resonant modes can be tuned by modulating the currents on the film. These results are helpful for designing novel chiral optical structures and provide unique methods for circular polarizers. (C) 2019 Optical Society of America

机译：Metasurfaces的圆形二色（CD）已用于生物监测，分析化学和完美的偏振转换器。在这项工作中，提出了由纳米孔和倾斜纳米棒组成的元表面以实现CD效应。数值计算表明，在圆偏振光照明下膜和倾斜纳米棒之间的电流在膜和倾斜的纳米棒之间形成，CD效应来自膜上的电流振荡与倾斜纳米棒上的耦合。该电振荡模式为CD效应提供独特的耦合机制。另外，CD强烈依赖于结构参数，并且可以通过调制胶片上的电流来调谐谐振模式。这些结果有助于设计新型手性光学结构，并为圆偏振器提供独特的方法。（c）2019年光学学会

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来源
《Applied optics》 |2019年第22期|共6页
作者
Aba Tudahong; Qu Yu; Abudukelimu Abuduwaili; Ullah Hamad; Zhang Zhongyue;
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作者单位

Shaanxi Normal Univ Sch Phys &

Informat Technol Xian 710062 Shaanxi Peoples R China;

Shaanxi Normal Univ Sch Phys &

Informat Technol Xian 710062 Shaanxi Peoples R China;

Shaanxi Normal Univ Sch Phys &

Informat Technol Xian 710062 Shaanxi Peoples R China;

Shaanxi Normal Univ Sch Phys &

Informat Technol Xian 710062 Shaanxi Peoples R China;

Shaanxi Normal Univ Sch Phys &

Informat Technol Xian 710062 Shaanxi Peoples R China;

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Chiral response of a metasurface composed of nanoholes and tilted nanorods

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