title: Coherent perfect absorption and transparency in a nanostructured graphene film.
abstract: We show numerically that both coherent perfect absorption and transparency can be realized in a monolayer graphene. The graphene film, doped and patterned with a periodical array of holes, can support plasmonic resonances in the Mid-infrared range. Under the illumination of two counter-propagating coherent optical beams, resonant optical absorption may be tuned continuously from 99.93% to less than 0.01% by controlling their relative phase which gives a modulation contrast of 40 dB (about 30 dB for transmission). The phenomenon provides a versatile platform for manipulating the interaction between light and graphene and may serve applications in optical modulators, transducers, sensors and coherent detectors.
authors.forename: Jianfa
authors.initials: J
authors.lastname: Zhang
authors.forename: Chucai
authors.initials: C
authors.lastname: Guo
authors.forename: Ken
authors.initials: K
authors.lastname: Liu
authors.forename: Zhihong
authors.initials: Z
authors.lastname: Zhu
authors.forename: Weimin
authors.initials: W
authors.lastname: Ye
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Yuan
authors.forename: Shiqiao
authors.initials: S
authors.lastname: Qin