1. State Key Laboratory of High Power Semiconductor Lasers Changchun University of Science and Technology Changchun 130022 China
2. School of Natural Sciences (SNS) National University of Sciences and Technology (NUST) H-12 Islamabad 44000 Pakistan
3. Institute of Semiconductor Science and Technology South China Normal University Guangzhou 510631 China
4. South China Normal University Qingyuan Institute of Science and Technology Innovation Co., Ltd. Qingyuan 511517 China