Title: Narrow-band enhanced absorption of monolayer graphene at near-infrared (NIR) sandwiched by dual gratings.
Authors: Zheng, Gaige; Zhang, Haojing; Bu, Lingbing
Abstract: One possibility of enhancing light absorption in monolayer graphene at near-infrared (NIR) wavelength region with grating structures is proposed and investigated. It is demonstrated that it is possible to achieve near-perfect absorption when a single monolayer graphene is sandwiched between two gratings with optimized geometric parameters at normal incidence for transverse electric (TE) polarization. By means of the rigorous coupled-wave analysis (RCWA), the effects of technological tolerances on the optical response of the structure by varying geometric parameters and incident angle are studied. The proposed photonic structure could be efficiently exploited as a building block for innovative optical absorbers or photodetectors in combination with active materials.
Subjects: LIGHT absorption; MONOMOLECULAR films; INFRARED radiation; GRAPHENE synthesis; POLARIZATION (Electricity)
Publication: Plasmonics, 2017, Vol 12, Issue 2, p271
ISSN: 1557-1955
Publication type: Academic Journal
DOI: 10.1007/s11468-016-0260-z

Narrow-band enhanced absorption of monolayer graphene at near-infrared (NIR) sandwiched by dual gratings.

Zheng, Gaige; Zhang, Haojing; Bu, Lingbing