Laurent Sirgue received a B.Sc. (1996) in physics from the University of Versailles and an M.Sc. (1997) in geophysics from EOST at Louis Pasteur University, Strasbourg, France. He recieved a Ph.D. (2003) in geophysics, funded by CGG, at École Normale Supérieure de Paris. While pursuing his Ph.D., he spent two years at Queen's University, Kingston, Ontario, Canada. After Graduating from Louis Pasteur University, he worked in research for CGG (1998) and was a visiting research scientist for 16 months (1999) at Queen's University. In 2001, he was a visitor at the Geosciences Research Center of Total, London U.K. His research interests are depth imaging, velocity model building, and nonlinear waveform inversion.