title: Dual-band infrared perfect absorber based on asymmetric T-shaped plasmonic array.
abstract: An infrared dual-band perfect absorber based on asymmetric T-shaped plasmonic array is designed and numerically investigated. Two distinct absorption peaks are achieved by localized surface plasmon polariton (LSPP) mode over a wide incident angular range. Both the absorption peaks can be finely tuned independently by varying the geometry of the structure. In our proposed structure, the period of the T-shaped structures becomes less and the multiple LSPP peaks are suppressed, which result in the sideband of absorption peaks very low. This dual-band perfect absorber has potential applications such as in infrared imaging devices, thermal bolometers, and wavelength selective radiators.
authors.forename: Rui
authors.initials: R
authors.lastname: Feng
authors.forename: Weiqiang
authors.initials: W
authors.lastname: Ding
authors.forename: Linhua
authors.initials: L
authors.lastname: Liu
authors.forename: Lixue
authors.initials: L
authors.lastname: Chen
authors.forename: Jun
authors.initials: J
authors.lastname: Qiu
authors.forename: Guoqiang
authors.initials: G
authors.lastname: Chen