Electrically Tunable Absorption Enhancement with Spectral and Polarization Selectivity through Graphene Plasmonic Light Trapping.
In this paper, anisotropic graphene plasmonic structures are explored for light trapping and absorption enhancement in surrounding media. It is shown that electrically tunable and versatile spectral and polarization selectivity can be realized. Particularly, it is possible to control absorption of the incident light's polarization component at a specific wavelength by varying the Fermi energy with suitable geometric designs. It may find applications for new types of infrared and THz photodetectors and will promote the research of other novel polarization devices.
College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China. wbliu10@163.com.
Wenbin
W
Liu
College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China. jfzhang85@nudt.edu.cn.
Jianfa
J
Zhang
College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China. zzhwcx@163.com.|State Key Laboratory of High Performance Computing, National University of Defense Technology, Changsha 410073, China. zzhwcx@163.com.
Zhihong
Z
Zhu
College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China. x.d.yuan@163.com.
Xiaodong
X
Yuan
College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China. sqqin8@nudt.edu.cn.|State Key Laboratory of High Performance Computing, National University of Defense Technology, Changsha 410073, China. sqqin8@nudt.edu.cn.
Shiqiao
S
Qin
absorption enhancement; graphene; photodetectors; plasmonic; polarization selectivity