Pressure-controlled terahertz filter based on 1D photonic crystal with a defective semiconductor

被引：9
|
作者：
Xue, Qinwen [1 ]
Wang, Xiaohua [1 ,2 ]
Liu, Chenglin [1 ]
Liu, Youwen [2 ]
机构：
[1] Yancheng Teachers Univ, Coll New Energy & Elect Engn, Yancheng 224007, Peoples R China
[2] Nanjing Univ Aeronaut & Astronaut, Coll Sci, Nanjing 210016, Jiangsu, Peoples R China
来源：
PLASMA SCIENCE & TECHNOLOGY | 2018年 / 20卷 / 03期
基金：
中国国家自然科学基金;
关键词：
photonic crystal; semiconductor; THz; filter; ABSORBER;
D O I：
10.1088/2058-6272/aa98d8
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The tunable terahertz (THz) filter has been designed and studied, which is composed of 1D photonic crystal (PC) containing a defect layer of semiconductor GaAs. The analytical solution of 1D defective PC (1DDPC) is deduced based on the transfer matrix method, and the electromagnetic plane wave numerical simulation of this 1DDPC is performed by using the finite element method. The calculated and simulated results have confirmed that the filtering transmittance of this 1DDPC in symmetric structure of air/(Si/SiO2) N/GaAs/(SiO2/Si) N/air is far higher than in asymmetric structure of air/(Si/SiO2) N/GaAs/(Si/SiO2) N/air, where the filtering frequency can be tuned by the external pressure. It can provide a feasible route to design the external pressure-controlled THz filter based on 1DPC with a defective semiconductor.
引用
收藏
页数：7
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