Abstract

With the realization of terahertz wave generator and detector, electromagnetic terahertz frequency range (0.1-10THz) attracted significant attention and has been extensively investigated. In this paper, a terahertz wave filter based on metamaterial is proposed. The technique is based on recording the time dependence of the electric field of a short electromagnetic pulse transmitted through a sample. The ratio of the Fourier transforms of the data recorded with and without the sample yields the complex transmission coefficient of the sample in the frequency domain. Terahertz wave filter based on metamaterial has been characterized by terahertz time-domain spectroscopy in the region from 0.1 to 3THz. The peak of the transmittance of about 88% occurs at 2.35THz.

© 2012 Optical Society of America