1. Photonics Laboratory, Computer, Electrical and Mathematical Sciences and Engineering Division (CEMSE), King Abdullah University of Science & Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
2. Semiconductor and Material Spectroscopy, King Abdullah University of Science & Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
3. Imaging and Characterization Core Lab, King Abdullah University of Science & Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
4. Department of Physics, Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland