1. School of Physics and Physical Engineering, Qufu Normal University, Qufu, 273165, China
2. Department of Applied Physics, Materials Research Center, Photonics Research Institute, and Research Institute for Advanced Manufacturing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
3. Shenzhen Research Institute, The Hong Kong Polytechnic University, Shenzhen, Guangdong 518057, China
4. China Railway Rolling Stock Corporation of Qingdao Sifang Corporation Limited, Qingdao, 266111, China