Open AccessEnhanced dual-band absorption of molybdenum disulfide using a plasmonic perfect absorber
Author(s) -
Xin Luo,
Xiang Zhai,
Lingling Wang,
Qi Lin
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.011658
Subject(s) - materials science , optics , finite difference time domain method , plasmon , molybdenum disulfide , wavelength , metamaterial , absorption (acoustics) , polarization (electrochemistry) , visible spectrum , optoelectronics , absorption band , metamaterial absorber , ray , physics , chemistry , tunable metamaterials , metallurgy
In order to remarkably enhance its absorption capability, a tunable dual-band MoS 2 -based perfect absorber inspired by metal-insulator-metal (MIM) metamaterial is proposed. By using the finite-difference time-domain (FDTD) simulations, dual-band perfect absorption peaks are realized in the visible light regime, and the absorptions of monolayer MoS 2 are enhanced up to 57% and 80.5% at the peak wavelengths. By manipulating related structural parameters, the peak wavelengths of MoS 2 absorption can be separately tuned in a wide wavelength range. Furthermore, the proposed absorber can tolerate a relatively wide range of incident angles and demonstrate polarization-dependence.