AI Article Synopsis
- The study reveals that laser-assisted dynamic interference in electron spectra can be experimentally observed using attosecond pulse trains, demonstrating fine interference patterns smaller than the energy of individual laser photons.
- Theoretical simulations align with experimental findings, utilizing methods like the time-dependent Schrödinger equation and strong-field approximation to support the results.
- Further analysis emphasizes the significance of phase variations in electron wave packets, showing that the manipulation of electron behavior in the continuum is achievable through advanced multicolor laser techniques controlled at attosecond timescales.
Article Abstract
We have observed the laser-assisted dynamic interference in the electron spectra triggered by attosecond pulse trains. The fingerprints of finer interference fringes, much smaller than the laser photon energy, have been clearly identified experimentally. Our measurements are successfully reproduced by theoretical simulations utilizing the numerical solution to the time-dependent Schrödinger equation and the strong-field approximation. Further explorations based on the saddle point analysis and a simple quantum model strengthen our finding and reveal the importance of the phase variations of the electron wave packets, which are modulated by the vector potential across the envelope of the strong laser pulse. Our studies show that the dynamic interference can be captured and the electron in the continuum can be effectively manipulated by the current attosecond-controlled multicolor laser approach.
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| http://dx.doi.org/10.1103/PhysRevLett.133.253201 | DOI Listing |
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