Imaging an aligned polyatomic molecule with laser-induced electron diffraction

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Document typeArticle
Defense date2015-06-24
PublisherNature Publishing Group
Rights accessOpen Access
European Commission's projectLASERLAB-EUROPE - The Integrated Initiative of European Laser Research Infrastructures II (EC-FP7-228334)
Abstract
Laser-induced electron diffraction is an evolving tabletop method that aims to image ultrafast
structural changes in gas-phase polyatomic molecules with sub-Ångstro¨m spatial and
femtosecond temporal resolutions. Here we demonstrate the retrieval of multiple bond
lengths from a polyatomic molecule by simultaneously measuring the C–C and C–H bond
lengths in aligned acetylene. Our approach takes the method beyond the hitherto achieved
imaging of simple diatomic molecules and is based on the combination of a 160 kHz
mid-infrared few-cycle laser source with full three-dimensional electron–ion coincidence
detection. Our technique provides an accessible and robust route towards imaging ultrafast
processes in complex gas-phase molecules with atto- to femto-second temporal resolution.
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