1. Key Laboratory of Electromagnetic Wave Information Technology and Metrology of Zhejiang Province, College of Information Engineering, China Jiliang University, Hangzhou 310018, Zhejiang, China
2. Centre for THz Research, China Jiliang University, Hangzhou 310018, Zhejiang, China
3. Zhejiang Zhong Huan Detection CO., LTD, Wenzhou 325000, Zhejiang, China
4. The Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, Zhejiang, China
5. College of Precision Instrument and Optoelectronic Engineering, Tianjin University, Tianjin 300072, China