Probing molecular frame photoionization via laser generated high-order harmonics from aligned molecules

Details Probing molecular frame photoionization via laser generated high-order harmonics from aligned molecules Probing molecular frame photoionization via laser generated high-order harmonics from aligned molecules

2009-01-09

arxiv.org/abs/0901.1311v1

Phys. Rev. Lett. 102, 203001 (2009)

Physics

Atomic Physics

5 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.102.203001

Present photoionization experiments cannot measure molecular frame photoelectron angular distributions (MFPAD) from the outermost valence electrons of molecules. We show that details of the MFPAD can be retrieved with high-order harmonics generated by infrared lasers from aligned molecules. Using accurately calculated photoionization transition dipole moments for fixed-in-space molecules, we show that the dependence of the magnitude and phase of the high-order harmonics on the alignment angle of the molecules observed in recent experiments can be quantitatively reproduced. This result provides the needed theoretical basis for ultrafast dynamic chemical imaging using infrared laser pulses.

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