1. Laboratory of Optics, Terahertz and Non-Destructive Testing, School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350108, People's Republic of China
2. Department of Naval Architecture, Ocean and Marine Engineering, University of Strathclyde, Glasgow G4 0LZ, United Kingdom
3. Fujian Key Laboratory of Medical Instrument and Pharmaceutical Technology, Fuzhou 350108, People's Republic of China