1. Key Laboratory of Spectral Measurement and Analysis of Shanxi Province, College of Physics and Information Engineering, Shanxi Normal University, No. 1 Gongyuan Street, Yaodu District, Linfen 041004, China
2. Shanxi Provincial Key Laboratory of Microstructure Electromagnetic Functional Materials, Shanxi Datong University, Xingyun Street, Nanjiao District, Datong, 037009, China