Wednesday, February 14, 2018
Abstract-Highly selective surface-wave resonators for terahertz frequency range formed by metallic Bragg gratings
N.S. Ginzburg, A.M. Malkin, A.S. Sergeev, S.E. Fil'chenkov, V.Yu. Zaslavsky,
In the frame of the quasi-optical approach we solve the diffraction problem and describe surface modes confined at a metallic plate with a shallow grating of finite length. We prove that such planar grating can form a highly selective surface-wave Bragg resonator. For a given material conductivity and grating length, we find the optimum corrugation depth that provides the maximum value of Q factor. These results are applicable for developing resonators for terahertz frequency bands.