Author Affiliations

Xueqian Zhang,¹ Quan Li,¹ Wei Cao,² Jianqiang Gu,¹ Ranjan Singh,³ Zhen Tian,¹ Jiaguang Han,^1,* and Weili Zhang^1,2

¹Center for Terahertz Waves and College of Precision Instrument and Optoelectronics Engineering, Tianjin University, Tianjin 300072, P. R. China

²School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, OK 74078, USA.

³Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA.

^*Corresponding author: jiaghan@tju.edu.cn