Terahertz optical modulator based on metamaterial split-ring resonators and graphene
Terahertz optical modulator based on metamaterial split-ring resonators and graphene
复制标题
DOI：
10.1117/1.oe.53.5.057108
复制
发表时间：
2014-05-01
影响因子：
1.3
通讯作者：
Ritchie, David A.
中科院分区：
文献类型：
--
作者：
Degl'Innocenti, Riccardo;Jessop, David S.;Ritchie, David A.
量子级联激光器与能够有效操纵太赫兹光的设备的集成代表了许多不同应用的基本步骤。分裂环谐振器，亚波长超材料元件，具有宽共振，易于光刻调谐，代表了实现这种入射光光学控制的理想途径。我们已经实现了一种基于金属分裂环和石墨烯单层电子特性之间相互作用的设计，该设计集成在单个器件中。通过作用于石墨烯的掺杂水平，在2.2和3.1太赫兹的频率范围内实现了光强的主动调制，最大调制深度为18%。(C) 2014年中国光学仪器工程师学会（SPIE）
The integration of quantum cascade lasers with devices capable of efficiently manipulating terahertz light represents a fundamental step for many different applications. Split-ring resonators, subwavelength metamaterial elements exhibiting broad resonances that are easily tuned lithographically, represent the ideal route to achieve such optical control of the incident light. We have realized a design based on the interplay between metallic split rings and the electronic properties of a graphene monolayer integrated into a single device. By acting on the doping level of graphene, an active modulation of the optical intensity was achieved in the frequency range between 2.2 and 3.1 THz, with a maximum modulation depth of 18%. (C) 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)