Guang S. He is a renowned research scientist who has been working in the field of nonlinear optics and nonlinear photonics for over fifty years. He was a research scientist at Shanghai Institute of Optics and Fine Mechanics before moving to work in the Photonics Research Laboratory and then in the Institute for Lasers, Photonics and Biophotonics at the State University of New York at Buffalo, where he has been based since 1987. He played a key role in the discovery and interpretation of stimulated Kerr scattering (1990), stimulated Rayleigh-Bragg scattering (2004), and stimulated Mie scattering (2012). He was instrumental to the development of the theoretical model explaining the phase-conjugation nature of both backward stimulated scattering and stimulated emission, as well as producing the first report on three-photon pumped lasing (Nature, 2002) and four-photon pumped lasing (2005).