Eugene Oks has founded and developed new research fields such as intra-Stark spectroscopy (a new class of nonlinear optical phenomena in plasmas), masing without inversion (advanced schemes for generating/amplifying coherent microwave radiation), and quantum chaos (nonlinear dynamics in the microscopic world). He is the Editor-in-Chief of the journal International Review of Atomic and Molecular Physics and has published approximately 500 papers as well as eight books.