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Updated: Aug 7, 2026

Direct Imaging of Laser-driven Ultrafast Molecular Rotation
Published on: February 4, 2017
Ionization of noble gases with pulses directly from a laser oscillator
S Dewald1, T Lang, C D Schröter
1Max-Planck-Institut für Kernphysik, saupfercheckweg, Heidelberg, Germany. sebastian.dewald@mpi-hd.mpg.de
Abstract:
A Ti:sapphire oscillator with an extended cavity generates pulses with 0.5 microJ energy at a repetition rate of 6 MHz and pulse durations of 50 fs. Tight focusing creates peak intensities exceeding 10(14) W/cm2, which is sufficient for ionizing helium, a nonlinear process where at least 17 photons are absorbed simultaneously.
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