Abstract
We explore the possibility of tomographic imaging the difference between the helium 1s2s triplet and singlet states using high-order harmonic generation. The harmonic spectrum from helium is studied using the rescattering model with multielectron-formulated dipole moments incorporated. By performing a numerical simulation of one-dimensional model helium atoms in a laser pulse, we show that the modified rescattering model correctly predicted the minimum positions of harmonic spectra. The harmonic spectrum is shown related to the multielectron recombination dipole moment by a shape factor. We further demonstrate that the topological difference between the singlet and triplet wavefunctions can be recognized from functions constructed using the harmonic signals.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call