1. State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University 1 , Taiyuan 030006, China
2. College of Physics and Electronic Engineering, Shanxi University 2 , Taiyuan 030006, China
3. Collaborative Innovation Center of Extreme Optics, Shanxi University 3 , Taiyuan 030006, China