Attosecond Photonics: What we learn by transforming many photons into one
Paul Corkum, University of Ottawa
The extreme nonlinear optics that underlies attosecond science is very different from perturbative nonlinear optics. Extreme nonlinear optics is understood through quantum trajectories of an ionizing electron wave packet. A trajectory begins from a bound state and returns to the same state, following an excursion in the continuum. Quantum trajectories map onto an interferometer - an electron interferometer created by light. A weak additional field can perturb these trajectories, manipulating the interferometer while simultaneously constructing a perturbative nonlinear optics on top of the extreme process. Using interferometric concepts, I will show how we can measure the space-time properties of attosecond pulses, the space-time structure of electronic wave packets and follow chemical dynamics of small molecules.
The Distinguished Lecturer Series (DLS) follows a colloquium format for a broad audience and will be followed by a reception to provide an opportunity for meeting the speaker.