Dual control of active graphene-silicon hybrid metamaterial devices

作者：Li, Quan; Tian, Zhen^*; Zhang, Xueqian; Xu, Ningning; Singh, Ranjan; Gu, Jianqiang; Lv, Peng; Luo, Lin Bao; Zhang, Shuang; Han, Jiaguang; Zhang, Weili

来源：Carbon, 2015, 90: 146-153.

DOI：10.1016/j.carbon.2015.04.015

• Active photonic devices
• Electrical gating
• Electromagnetic behavior
• Invisibility cloaking
• Metamaterial devices
• Optical and electronic properties
• Optical illumination
• Silicon Technologies

Metamaterials offer enormous opportunities and unprecedented functionalities to manipulate electromagnetic waves enabling promising applications such as invisibility cloaking, superfocusing and subwavelength confinement. The exotic electromagnetic behavior of metamaterials was dramatically empowered by dynamic control through incorporation of active media. A prominent example is a graphene metamaterial - an integration of a two-dimensional monolayer graphene with a planar metasurface, where the unique optical and electronic properties of graphene is inherited by the metamaterial, thus opening up fascinating possibilities in electromagnetic wave control. Here, through a combination of continuous wave (CW) optical illumination and electrical gating, we demonstrate a giant active modulation of terahertz waves in a graphene-silicon hybrid metamaterial at extremely low bias voltages. The highly tunable characteristics of the graphene metamaterial device under electrical bias and optical illumination open up new avenues for graphene-based high performance integrated active photonic devices compatible with the silicon technology.

• 出版日期2015-8
• 单位南阳理工学院; 合肥工业大学; 天津大学