Polarization-insensitive metamaterial absorber of selective response in terahertz frequency range
作者： B Grześkiewicz , A Sierakowski , J Marczewski , N Pałka , E Wolarz
DOI: 10.1088/2040-8978/16/10/105104
关键词: Photonic metamaterial 、 Metamaterial 、 Optoelectronics 、 Metamaterial absorber 、 Antiresonance 、 Optics 、 Permittivity 、 Metamaterial antenna 、 Electromagnetic radiation 、 Materials science 、 Terahertz radiation 、 Atomic and Molecular Physics, and Optics 、 Electronic, Optical and Magnetic Materials
摘要: We present an experimental and numerical analysis of a planar metamaterial that selectively absorbs terahertz radiation. The is produced as two-dimensional network electromagnetic resonators characterized by electric magnetic responses in narrow frequency range. unit cell the has fourfold symmetry about axis perpendicular to planes containing metallic resonators. Such polarization-insensitive waves. A good agreement absorption characteristics obtained from simulations spectroscopic experiments shown. wave impedance, refractive index, permittivity permeability allows identification characteristic resonance antiresonance system. It shown mostly result field energy accumulation absorber.
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