红外与毫米波学报2025，Vol.44Issue(2)：177-183,7.DOI:10.11972/j.issn.1001-9014.2025.02.005
偏振可调的太赫兹砷化镓光电导天线阵列研究
The research on polarization-tunable terahertz GaAs photoconductive antenna array
摘要
Abstract
As an important emitter for terahertz radiation,photoconductive antenna arrays are limited in their applica-tion flexibility due to the fixed polarization state of traditional antennas.In response to this issue,we have designed and studied a polarization-adjustable four-element terahertz gallium arsenide photoconductive antenna array,aiming to en-hance its versatility and applicability in various applications.By precisely controlling the excitation of each element,the antenna array can achieve precise control of linearly and circularly polarized terahertz waves through in-phase unequal amplitude excitation and phase difference excitation.The results show that with in-phase unequal amplitude excitation,flexible control of linearly polarized terahertz waves within a 360-degree range can be achieved.With a 90-degree phase difference excitation,circularly polarized terahertz waves are generated,with a-10 dB impedance bandwidth range of 0.057-1.013 THz and a relative bandwidth of 178.69％.The axial ratio bandwidth range is 0.815-0.947 THz,with a relative bandwidth of 14.98％.关键词
光电导天线阵列/太赫兹辐射/激励调控Key words
photoconductive antenna array/terahertz radiation/excitation regulation分类
物理学引用本文复制引用
董陈岗,施卫,韩小卫,王志全,王欣,张修兴..偏振可调的太赫兹砷化镓光电导天线阵列研究[J].红外与毫米波学报,2025,44(2):177-183,7.基金项目
国家自然科学基金(62371391) （62371391）
陕西省科技厅基金青年项目(2023-JC-QN-0676) （2023-JC-QN-0676）
陕西省教育厅基金一般专项(21JK0632) （21JK0632）
渭南市科学技术局基金重点研发计划项目(2022ZDYFJH-123)Supported by the National Natural Science Foundation of China(62371391),the Natural Science Foundation of Shaanxi Provincial Department of Science and Technology(2023-JC-QN-0676),Research Foundation of Education Bureau of Shaanxi Provincial(21JK0632),Key Re-search and Development Plan Project of Science and Technology Bureau of Weinan(2022ZDYFJH-123) （2022ZDYFJH-123）
