David Andrews conducts research in wide-ranging areas of quantum and nonlinear optics, nanophotonics, quantum electrodynamics, chirality, and singular optics. He has published more than 400 papers and more than 20 books, including The Angular Momentum of Light, Resonance Energy Transfer, Lasers in Chemistry, and an Introduction to Photon Science and Technology. David has given invited lectures in more than twenty different nations. He instigated several conferences, including Complex Light and Optical Forces at Photonics West, and the Nanophotonics conference at Photonics Europe. He is the 2021 President of SPIE, the international society for optics and photonics.