Generation of THz radiation: Metallic metamaterial grating versus lamellar grating

Abstract

The Smith-Purcell radiation (SPR) in metallic metamaterial grating is studied theoretically. This metallic metamaterial is a one-dimensional array of slits with sub-wavelength period perforated on a perfect metallic film, which supports discrete guided modes in presence of convective electron bunch near its surface. It is also found that SPR intensity is… (More)

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