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Updated: Mar 18, 2026

Direct Imaging of Laser-driven Ultrafast Molecular Rotation
Published on: February 4, 2017
Time resolved 3D momentum imaging of ultrafast dynamics by coherent VUV-XUV radiation
F P Sturm1, T W Wright1, D Ray1
1Ultrafast X-Ray Science Lab, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
Abstract:
We present a new experimental setup for measuring ultrafast nuclear and electron dynamics of molecules after photo-excitation and ionization. We combine a high flux femtosecond vacuum ultraviolet (VUV) and extreme ultraviolet (XUV) source with an internally cold molecular beam and a 3D momentum imaging particle spectrometer to measure electrons and ions in coincidence. We describe a variety of tools developed to perform pump-probe studies in the VUV-XUV spectrum and to modify and characterize the photon beam. First benchmark experiments are presented to demonstrate the capabilities of the system.
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