1. Beijing National Laboratory for Condensed Matter Physics, Institute of PhysicsChinese Academy of Sciences Beijing 100190 China
2. School of Physical Sciences, CAS Key Laboratory of Vacuum PhysicsUniversity of Chinese Academy of Sciences Beijing 100049 China
3. Laboratory of Weak Light Nonlinear Photonicsof the Ministry of Education, School of Physics and Teda Applied Physics InstituteNankai University Tianjin 300071 China
4. Songshan Lake Materials Laboratory Dongguan 523808 China