作者:王晨阳，贺训军，姜久兴，孙晨光
Authors:WANG Chen-yang,HE Xun-jun,JIANG Jiu-xing,SUN Chen-guang摘要:摘要:设计了一种在近红外太赫兹波段产生电磁响应的超材料器件，该器件单元结构是由全对称的金属四开口谐振环与本征硅衬底组成。通过仿真模拟设计出合理的结构与尺寸的金属谐振环，达到想要的谐振效果。分析了表面电场强度与表面电流流向，以便了解电磁响应机理。通过光刻剥离工艺制备出四开口超材料谐振环，并基于光泵浦探测系统研究了太赫兹光谱透射实验样品后的光频谱响应特征。结果表明：当入射的太赫兹波电场矢量电场与超材料衬底同一条边平行或垂直时，太赫兹都在1THz附近，且响应特征相似。这说明了该全对称结构对于入射太赫兹波的极化并不敏感。此设计在隐身技术、光电器件、传感器和宽带通信等领域具有潜在的应用前景。
Abstract:Abstract:We have designed a metamaterial device which can generate electromagnetic response in near-infrared terahertz band. The device unit structure is composed of a fully symmetrical metal four split resonant ring and an intrinsic silicon substrate.The reasonable structure and size of metal resonant ring are designed by simulation to achieve the desired resonance effect. In order to understand the electromagnetic response mechanism, the surface electric field strength and the surface current direction were analyzed.We have fabricated a four-opening metamaterial resonant ring by photolithography, and studied the electromagnetic response characteristics of terahertz transmission samples by optical pumping detection system.The results show that when the incident terahertz wave electric field vector field is parallel or perpendicular to the same edge of the metamaterial substrate, the terahertz is near 1thz, and the response characteristics are similar. This shows that the fully symmetric structure is not sensitive to the polarization of incident terahertz wave.Our design has potential applications in stealth technology, optoelectronic devices, sensors and broadband communications.

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