SIMULATION OF TERAHERTZ WAVE TRANSMISSIONTHROUGH AN ARRAY OF SUBWAVELENGTH METALLIC SLITS

摘要

The transmission properties of terahertz wave through subwavelength metallic slits havebeen investigated using a quasianalytical modal expansion method. The effects of slitwidths, periodic length and incident angle on the transmission spectrum and scatteringphase are given and dicussed. The results demonstrate that the transmittance increaseswith the increasing of the ratio of width to slit period. As the incident angle increases,the transmittance increases and shows more peaks.