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.