Electron dynamics driven by light pulse derivatives

Abstract

We demonstrate that ultrashort pulses carry the possibility for a new regime of light-matter interaction with nonadiabatic electron processes sensitive to the envelope-derivative of the light pulse. A standard single pulse with its two peaks in the derivative separated by the width of the pulse acts in this regime like a traditional double pulse. The two ensuing nonadiabatic ionization bursts have slightly different ionization amplitudes. This difference is due to redistribution of continuum electron energy during the bursts, negligible in standard photo-ionization. A time-dependent close- coupling approach based on cycle-averaged potentials in the Kramers-Henneberger reference frame permits a detailed understanding of light pulse derivative-driven electron dynamics.

5 pages, 5 figures

References in corpus (2)

• Exact Nondipole Kramers-Henneberger Form of the Light-Atom Hamiltonian: An Application to Atomic Stabilization and Photoelectron Energy Spectra
• Recovery of dynamic interference

Cited by in corpus (6)

• Adiabatic passage to the continuum
• Nondipole effects in atomic dynamic interference
• Non-adiabatic molecular association in thermal gases driven by radio-frequency pulses
• Zero-energy photoelectric effect
• Observation of coherent oscillations in association of dimers from a thermal gas of ultracold atoms
• Non-adiabatic ionization with tailored laser pulses