Lei Wang graduated from Shandong University (China) with a bachelor degree in Physics. After that, he continued his graduate studies at Shandong University and the Institute of Semiconductors, Chinese Academy of Sciences. He focused on developing high power quantum cascade lasers (QCLs), including semi-insulating InP regrowth and phase-locked arrays of QCLs. He joined the iPL in 2017 as a Ph.D. student. He is focusing on laser integration for silicon photonics by MOCVD-based heteroepitaxy.