Abstract
The transmission performance of three-dimensional metallic woven meshes (MWMs) is first investigated at terahertz frequencies, which is found to depend on incident polarizations and angles. A mode-splitting phenomenon occurs when the incident angle of transverse magnetic waves is oblique and above 25°. The low-frequency dip exhibits a similar modal pattern to that of surface modes. But the high-frequency dip exhibits an asymmetric field distribution, originating from the coupling between surface modes and the MWMs modes. Experimental and numerical results demonstrate that the polarization- and angle-dependent performances of the MWMs enable the mesh to be flexible for THz wave manipulations.
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