1 Tianjin University, Center for Terahertz Waves and College of Precision Instrument and Optoelectronics Engineering, Ministry of Education, Key Laboratory of Optoelectronic Information Technology, Tianjin, China
2 Tianjin University, College of Intelligence and Computing, Tianjin, China
3 Central South University, School of Physics and Electronics, Hunan Key Laboratory of Nanophotonics and Devices, Changsha, China
4 Guilin University of Electronic Technology, School of Optoelectronic Engineering, Guangxi Key Laboratory of Optoelectronic Information Processing, Guilin, China
5 Oklahoma State University, School of Electrical and Computer Engineering, Stillwater, Oklahoma, United States