David L. Andrews is Professor of Chemical Physics at the University of East Anglia (UEA) in Norwich, U.K. His internationally renowned research group is known for developing the quantum theory of optical interactions, photonics, nonlinear optics and chiral interactions. He is highly active in various international scientific societies and was the 2021 President of SPIE - the international society for optics and photonics. He is a Fellow of SPIE, the Institute of Physics, the Royal Society of Chemistry and Optica. His publications exceed 400 papers and over twenty books, recently including an Introduction to Photon Science and Technology, Molecular Photophysics and Spectroscopy, The Angular Momentum of Light, and Structured Light for Optical Communication.