Title :
A novel helical metamaterial absorber: Simulation study with the FDTD method
Author :
Zhenyu Yang ; Zeqin Lu ; Lin Wu ; Peng Zhang ; Ming Zhao
Author_Institution :
Wuhan Nat. Lab. of Optoelectron.(WNLO), Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
In this work, a novel optical metamaterial absorber is proposed which has properties of broad band and independent to polarization. The absorber consists of opposite-handedness metallic triple-helix array. Simulated with the finite-difference time-domain (FDTD) method, an average absorbance of 89.10% is observed in the region of 0.33~1.22 μm as well as an absorption peak of 97.57% at 0.43 μm, Compared with many existing planar metamaterial absorbers, this helical metamaterial absorber shows advantages of broad-band and polarization independence.
Keywords :
finite difference time-domain analysis; light absorption; light polarisation; optical metamaterials; FDTD method; finite-difference time-domain method; helical metamaterial absorber; opposite-handedness metallic triple-helix array; optical metamaterial absorber; planar metamaterial absorbers; polarization independence; Arrays; Finite difference methods; Magnetic materials; Metamaterials; Optical attenuators; Optical polarization; Optical sensors; Polarization; absorption of light; metamaterials;
Conference_Titel :
Metamaterials (Meta), 2012 International Workshop on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4673-2807-4
DOI :
10.1109/META.2012.6464961
