Laser-induced electron diffraction and high harmonic generation by intense lasers

18.07.2013, 14:30

Prof. Chii-Dong Lin, J. R. Macdonald Laboratory, Department of Physics, Kansas State University

When molecules are exposed to an intense mid-infrared laser pulse, electrons that are released earlier in the pulse may be driven back to recollide with the parent ions. If the returning electrons are rescattered by the parent molecular ions, the resulting electron diffraction images may be used to extract the atomic positions of atoms in the molecule. If the returning electrons are recombined with the molecular ions, the resulting emission of high-order harmonics can be used to extract molecule's outershell electronic structure. Thus few-femtosecond infrared lasers are suitable for probing the ultrafast dynamic structural changes of molecules.