Compact Terahertz Wave Collimator Design with Photonic Crystal Slabs

作     者：Zhen-Hai Wu Kang Xie Ping Jiang Jian-Chen Wan 

作者机构：School of Optoelectronic Information University of Electronic Science and Technology of China Chengdu 610054 China School of Information Engineering HuangheScience and Technology College of China Zhengzhou 450005 China 

基　　金：supported by the National Natural Science Foundation of China under Grant No.60588502 

出 版 物：《Journal of Electronic Science and Technology》 (电子科技学刊（英文版）)

年 卷 期：2011年第9卷第3期

页      码：227-230页

摘      要：A compact terahertz （THz） wave collimator is proposed, which works under the frequency from 2.4 THz to 2.7 THz with a photonic crystal （PC） slab based on the self-collimation effect. The plane wave expansion （PWE） method is used to calculate the dispersion surfaces and the equal-frequency contours （EFCs） and optimize the structure. The propagation of the THz waves in the structure is simulated and the normalized transmission is calculated by using the finite-difference time-domain （FDTD） method with perfectly matched layer （PML） absorbing boundary conditions. Numerical simulations show that the designed collimator has a good collimation property and a high transmittance.

主 题 词：Index Terms---Photonic crystals self-collimation Terahertz. 

学科分类：080904[080904] 0809[工学-计算机类] 08[工学] 

D　O　I：10.3969/j.issn.1674-862X.2011.03.006

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