Polarized Terahertz Wave Resonance Enhanced Transmission of One-dimension Steel Wire Grid

Terahertz resonance enhanced transmission of one-dimension steel wire grid was experimentally measured using terahertz time-domain spectroscopy (THz-TDS) and simulated with CST Microwave Studio. The results show that the amplitude of multiple peaks in the time-domain waveform and the resonance enhanced transmission is mainly determined by the polarization direction of incident terahertz wave. The multiple resonance transmission frequency is consistent with Fabry-Perot-like cavity resonance. The experimental results are helpful to on-line steel wire grid detection and terahertz imaging.