By analyzing accurate theoretical results from solving the time-dependent Schrödinger equation of atoms in few-cycle laser pulses, we established the general conclusion that laser-generated high-energy electron momentum spectra and high-order harmonic spectra can be used to extract accurate differential elastic scattering and photo-recombination cross sections of the target ion with free electrons, respectively. Since both electron scattering and photoionization (the inverse of photo-recombination) are the conventional means for interrogating the structure of atoms and molecules, this result implies that existing few-cycle infrared lasers can be implemented for ultrafast imaging of transient molecules with temporal resolution of a few femtoseconds.
T. Morishita et al., "Accurate Retrieval of Structural Information from Laser-Induced Photoelectron and High-Order Harmonic Spectra by Few-Cycle Laser Pulses," Physical Review Letters, vol. 100, no. 1, American Physical Society (APS), Jan 2008.
The definitive version is available at https://doi.org/10.1103/PhysRevLett.100.013903
Keywords and Phrases
Harmonic Generation; High Energy Physics; Laser Pulses; Photoionization; Schrodinger Equation, Infrared Lasers; Photorecombination, Photoelectrons
International Standard Serial Number (ISSN)
Article - Journal
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