1. College
of Physics and Materials Science, Tianjin Normal University, Tianjin 300387, People’s Republic of China
2. Key
Laboratory of Beam Technology and Material Modification of Ministry
of Education, Beijing Normal University, Beijing 100875, People’s Republic of China
3. Institute
of Modern Optical Technologies, College of Physics, Optoelectronics
and Energy, Soochow University, Suzhou 215006, People’s Republic of China