Dr. Chang is a currently a professor in the Department of Physics and the director of the Institute for the Frontier of Attosecond Science and Technology. He earned his Ph.D. at the Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences. He is a Pegasus and Distinguished Professor at the University of Central Florida and leads research concerned with attosecond lasers and the application in atomic, molecular and optical physics. Dr. Chang is a fellow of the American Physical Society and has published 150 papers in the field of ultrafast high power lasers, ultrafast XUV/X-ray science and strong field AMO physics. His notable contributions include inventing the Double Optical Gating for the generation of single isolated attosecond pulses. His more recent pioneering work includes generation of isolated attosecond pulses in the x-ray regime.