摘要
Metamaterial absorbers display potential applications in the field of photonics and have been investigated extensively during the last decade.We propose a dual-band resonant metamaterial absorber with right-angle shaped elements(RAEs)in the terahertz range based on numerical simulations.The absorber remains insensitive to a wide range of incidence angles(0°-70°)by showing a minimum absorbance of~80%at 70°.Furthermore,the proposed absorber is highly independent on any state of polarization of the incidence electromagnetic wave due to the high absorbance,i.e.,greater than 80%,recorded for the considered polarization states.To further comprehend the slight variations in absorbance as a function of change in the angle of incidence,the impedance of the structure has been critically examined.The metamaterial absorber is simple in design,and we provide a possible path of fabrication.
