Li Feng is a male doctorate supervisor and associate researcher. Primarily conducting research on high-energy femtosecond laser generation, amplification, transmission, and application technologies. We have achieved many novel results in special fiber amplification technologies, such as Yb doped photonic crystal fibers, Yb: YAG single crystal fibers, high gain low nonlinear glass fibers, hollow photonic crystal fiber femtosecond flexible transmission, and nonlinear compression technologies.