Abstract

We propose a tunable and broadband terahertz (THz)-wave absorber based on the graphene metasurface, which consists of a layer of graphene-hollow-petal structure array and a bottom copper film separated by a 20-μm-thick lossless thermo plastic olefin polymer of amorphous structure layer. The mechanism of such a THz-wave absorber is numerically investigated and theoretically analyzed with the aid of a modified Fabry–Perot resonant model and finite element method. A large absorption efficiency of more than 90% in a frequency range of 2.66 THz 3.46THz was obtained up to a THz-wave incident angle as large as 50°. The absorption bandwidth and absorptivity can be tuned by changing the bias voltage of the graphene metasurface Fermi level. This work indicates that our device has potential applications with respect to tunable sensors and smart absorbers.

© 2019 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Hybridization-induced broadband terahertz wave absorption with graphene metasurfaces

Nanli Mou, Shulin Sun, Hongxing Dong, Shaohua Dong, Qiong He, Lei Zhou, and Long Zhang
Opt. Express 26(9) 11728-11736 (2018)

Tunable light trapping and absorption enhancement with graphene-based complementary metasurfaces

Tingting Liu, Chaobiao Zhou, Xiaoyun Jiang, Le Cheng, Chen Xu, and Shuyuan Xiao
Opt. Mater. Express 9(3) 1469-1478 (2019)

Tunable absorption enhancement in periodic elliptical hollow graphene arrays

Chunlian Cen, Lin Liu, Yubin Zhang, Xifang Chen, Zigang Zhou, Zao Yi, Xin Ye, Yongjian Tang, Yougen Yi, and Shuyuan Xiao
Opt. Mater. Express 9(2) 706-716 (2019)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (8)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (8)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription