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27 November 2012 Compact terahertz wave broadband reflectors based on silicon photonic crystal slabs
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We propose a compact Terahertz (THz) wave broadband reflector based on the effect of guided mode resonance in photonic crystal slabs. The photonic crystal slabs consist of a square array of circular air holes in silicon. A novel method based on a map of localized bandwidth with defined reflectivity is introduced to analyze the impact of normalized thickness and hole size. The rigorous coupled-wave analysis (RCWA) technique is then applied to analyze its performance. The numerical simulations show that the proposed configuration can offer a broadband frequency range from 2.27THz to 2.89THz with beyond 95% reflectivity.
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Xiaolong Hao, Zexuan Qiang, Zhiyong Chen, Yanmin Zheng, Junzhen Jiang, Xiyao Chen, and Yishen Qiu "Compact terahertz wave broadband reflectors based on silicon photonic crystal slabs", Proc. SPIE 8555, Optoelectronic Devices and Integration IV, 855509 (27 November 2012);


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