2014/07/15 by Nicolas Berti, N. Berti, P. Béjot +4
Physics and Astronomy · #Advanced Fiber Laser Technologies #Context (archaeology) #Field (mathematics) #Filamentation #Laser #Laser-Matter Interactions and Applications #Nonlinear system #Optics #Physics #Pulse (music) #Quantum mechanics #Spectroscopy and Quantum Chemical Studies #physics.atom-ph #physics.optics
paper · pdf · doi:10.1103/physreva.90.053851
published as Phys. Rev. A 90, 053851 (2014)
arxiv created 2014/07/15 · openalex publication_date 2014/11/26 · arxiv updated 2014/12/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The impact of nonadiabatic laser-induced molecular alignment on filamentation is numerically studied. Weak- and strong-field models of impulsive molecular alignment are compared in the context of nonlinear pulse propagation. It is shown that the widely used weak-field model describing the refractive index modification induced by impulsive molecular alignment accurately reproduces the propagation dynamics providing that only a single pulse is involved during the experiment. On the contrary, it fails at reproducing the nonlinear propagation experienced by an intense laser pulse traveling in the wake of a second strong laser pulse. The discrepancy depends on the relative delay between the two pulses and is maximal for delays corresponding to half the rotational period of the molecule.