Accurate Retrieval of Target Structures and Laser Parameters of Few-Cycle Pulses from Photoelectron Momentum Spectra
We illustrate a new method of analyzing three-dimensional momentum images of high-energy photoelectrons generated by intense phase-stabilized few-cycle laser pulses. Using photoelectron momentum spectra that were obtained by velocity-map imaging of above-threshold ionization of xenon and argon targets, we show that the absolute carrier-envelope phase, the laser peak intensity, and pulse duration can be accurately determined simultaneously (with an error of a few percent). We also show that the target structure, in the form of electron-target ion elastic differential cross sections, can be retrieved over a range of energies. The latter offers the promise of using laser-generated electron spectra for probing dynamic changes in molecular targets with subfemtosecond resolution.
S. Micheau et al., "Accurate Retrieval of Target Structures and Laser Parameters of Few-Cycle Pulses from Photoelectron Momentum Spectra," Physical Review Letters, vol. 102, no. 7, American Physical Society (APS), Feb 2009.
The definitive version is available at https://doi.org/10.1103/PhysRevLett.102.073001
Keywords and Phrases
Argon; Electrons; Laser Pulses; Lasers; Photoelectron Spectroscopy; Photoionization; Photons; Targets; Three Dimensional; Xenon, Above-Threshold Ionizations; Carrier-Envelope Phase; Differential Cross Sections; Dynamic Changes; Electron Spectrum; Few-Cycle Pulse; High-Energy Photoelectrons; Laser Parameters; Molecular Targets; Momentum Images; Momentum Spectrum; Peak Intensities; Phase-Stabilized Few-Cycle Laser Pulse; Pulse Durations; Target Structures; Velocity-Map Imaging, Pulsed Laser Applications
International Standard Serial Number (ISSN)
Article - Journal
© 2009 American Physical Society (APS), All rights reserved.
01 Feb 2009