1. College of Electronics and Information Engineering Institute of Microscale Optoelectronics Shenzhen University Shenzhen 518060 China
2. School of Physics and Technology Nanjing Normal University Nanjing 210023 China
3. Guangdong Hongxin Technology Co. Ltd. Dongguan 523690 China
4. Guangdong Nanhe Laser Technology Ltd. Foshan 528314 China