Dr. Tianxiang Xu has been the Research Assistant at the Laboratory of Infrared Materials and Devices, Research Institute of Advanced Technologies, Ningbo University since September 2018. He received his Bachelor’s degree at Qingdao University in 2012. From December 2016 to November 2017, he was a joint PhD. student at the Australian National University. He received his PhD from the Institute of Crystal Materials, Shandong University in 2018. He is mainly engaged in the fields of nonlinear optics, quasi-phase matching, femtosecond laser direct-write ferroelectric domain modulation, and nonlinear wavefront modulation.