Extracting continuum electron dynamics from high harmonic emission from molecules.

Department of Physics and JILA, University of Colorado and NIST, Boulder, Colorado 80309, USA.
Physical Review Letters (Impact Factor: 7.73). 03/2012; 108(13):133901. DOI: 10.1103/PhysRevLett.108.133901
Source: PubMed

ABSTRACT We show that high harmonic generation is the most sensitive probe of rotational wave packet revivals, revealing very high-order rotational revivals for the first time using any probe. By fitting high-quality experimental data to an exact theory of high harmonic generation from aligned molecules, we can extract the underlying electronic dipole elements for high harmonic emission and uncover that the electron gains angular momentum from the photon field.

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