Author Affiliations

Haihong Bao,^a,b,* Yingzhen Hong,^a,b Wei Jin,^a,b Hoilut Ho,^a,b Shoufei Gao,^a,c Yingying Wang,^c and Pu Wang^c

^aDepartment of Electrical Engineering, The Hong Kong Polytechnic Uniersity, Hong Kong, China

^bPhotonics Research Center, The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, China

^cBeijing Engineering Research Centre of Laser Technology, Institute of Laser Engineering, Beijing University of Technology, Beijing 100124, China

^*Corresponding author: edward.bao@connect.polyu.hk