Effects of orientation and alignment in high-harmonic generation and above threshold ionization

Details Effects of orientation and alignment in high-harmonic generation and above threshold ionization Effects of orientation and alignment in high-harmonic generation and above threshold ionization

2007-03-26

arxiv.org/abs/physics/0703234v1

Phys. Rev. A 76, 035401 (2007)

Physics

Atomic Physics

4 pages, 2 figures

Scientific paper

10.1103/PhysRevA.76.035401

When molecules interact with intense light sources of femtosecond or shorter duration the rotational degrees of freedom are frozen during the response to the strong nonperturbative interaction. We show how the frozen degrees of freedom affect the measurable signals in high-harmonic generation and above threshold ionization. High-harmonic generation exhibits optical coherence in the signal from different orientations of the molecule. For ionization, the contributions from different orientations are added incoherently. The effects are demonstrated for realistic alignment and orientation schemes.

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