Design and experimental verification of a perfect dual-band optical metamaterial absorber

作者：Ye, Fenghua; Ye, Huan^*; Wang, Xiaozhi

来源：Modern Physics Letters B, 2017, 31(8): 1750047.

DOI：10.1142/S0217984917500476

• Impedance
• matching
• metamaterial
• absorber

A perfect dual-band optical absorber is designed and measured. A low absorption peak (P1) and two high absorption peaks (P2 and P3) are obtained. The P1 peak is excited by the resonance of internal surface plasmon (ISP) mode. The P2 peak is resulted by the coupling of local surface plasma (LSP) modes and the resonance of ISP mode. The P3 peak is excited by the resonance of ISP mode.The damping constant of the gold film is optimization calculated in simulations. Measured results indicate that high absorption performe disobtained with different dielectric layers. The measured metamaterial absorber displays high absorption performed at TM and TE configurations. Moreover, the proposed metamaterial absorber is sensitivity on the change of the refractive index of the environmental media.

• 出版日期2017-3-20
• 单位武汉理工大学; 广东工业大学