Yuncai Wang received his B.S. degree in Semiconductor Physics from Nankai University, Tianjin, China in 1986, and M.S. and Ph.D. degrees in Physics and Optics from Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Shaanxi, China in 1994 and 1997, respectively. In 1986, he joined Taiyuan University of Technology as a Teaching Assistant. He was a Visiting Scholar in Technical University of Berlin, Berlin, Germany, from 2001–2002. He was a lecturer (1994–1998) and then an Assistant Professor (1998–2003) in the Department of Physics, Taiyuan University of Technology. Since 2003, he has been a Professor in the College of Physics and Optoelectronics, Taiyuan University of Technology. In 2019, he joined the Institute of Advanced Photonics Technology, Guangdong University of Technology. His current research interests include the nonlinear dynamics of semiconductor lasers and their applications, chaos secure communication based on semiconductor lasers, and millimeter wave signal generation and applications.