1. State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Laser Spectroscopy School of Physics and Electronics Engineering Shanxi University 030006 Taiyuan China
2. Collaborative Innovation Center of Extreme Optics Shanxi University 030006 Taiyuan China
3. Institute of Nuclear and New Energy Technology Collaborative Innovation Center of Advanced Nuclear Energy Technology Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education Tsinghua University 100084 Beijing China