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Active optical modulator based on a metasurface in the terahertz region

Yue Tian, Jie Ji, Siyan Zhou, Hu Wang, Zhichao Ma, Furi Ling, and Jianquan Yao

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Abstract

The characteristics of the electromagnetically induced transparency (EIT) analog exposed under different illumination powers have been investigated theoretically and experimentally. The EIT analog is composed of a fixed aluminum structure fabricated on the silicon substrate. It was found that the resonance degree of the transparent window displayed a decreasing trend, and a blueshift phenomenon emerged by increasing the powers of the laser. Similarly, the properties of the time delay under different illumination powers have also been researched. The realization of the tuning effect may provide a possible choice for the modulation of the slow light devices.

© 2018 Optical Society of America

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