"Atto-science: what we learn while converting many photons into one."
University of Ottawa/CNRC
Attosecond pulse generation can be understood through quantum trajectories
of an ionizing electron. A trajectory begins from a bound state and returns
to the same state after an excursion in the continuum. Quantum
trajectories, such as these, map onto an interferometer - an electron
interferometer created by light. This mapping makes it obvious that weak
fields perturb attosecond pulse generation and thereby we can construct a
perturbative nonlinear optics on top of the non-perturbative process. I
will show how this allows us develop an all optical method to fully
characterize the space-time structure of attosecond pulses.
A (sheared) interferometer can measure most properties of light so we should be able to measure most properties of the electron. I will show how high harmonic or attosecond spectroscopy can image molecular orbitals or follow chemical dynamics of small molecules.
Thursday, February 20, 2014
Hawking Auditorium, 4:00 p.m.
Mitchell Physics Building
Department of Physics and Astronomy
Texas A&M University
(Refreshments to be served at 3:45pm in the Penrose Plaza)
Host: Alexei Sokolov