[1] Tongji Univ, Inst Adv Study, Sch Phys Sci & Engn, Shanghai 200092, Peoples R China
[2] MOE Key Lab Adv Microstruct Mat, Shanghai 201899, Peoples R China
[3] Jiangsu Normal Univ, Sch Phys & Elect Engn, Jiangsu Key Lab Adv Laser Mat & Devices, Xuzhou 221116, Jiangsu, Peoples R China
[4] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Shandong, Peoples R China
[5] Guangxi Univ, Sch Phys Sci & Technol, Nanning 530004, Peoples R China
[6] Shanghai Inst Technol, Sch Mat Sci & Engn, Inst Crystal Growth, Shanghai 201418, Peoples R China
[7] Shanghai Engn Res Ctr Sapphire Crystals, Shanghai 201899, Peoples R China