[1] Jiangsu Normal Univ, Sch Phys & Elect Engn, Jiangsu Key Lab Adv Laser Mat & Devices, Xuzhou 221116, Peoples R China
[2] Suzhou Univ Sci & Technol, Sch Phys Sci & Technol, Suzhou 215009, Peoples R China
[3] Chinese Acad Sci, Key Lab Transparent Optofunct Inorgan Mat, Shanghai Inst Ceram, Shanghai 201899, Peoples R China
[4] Tongji Univ, Inst Adv Study, Sch Phys Sci & Engn, Shanghai 200092, Peoples R China