Velocity-map imaging with counter-propagating laser pulses
Velocity-map imaging (VMI) is a key tool for studying outgoing electrons or ions following optical strong-field interactions of atoms and molecules and provides good momentum resolution even if the source volume of the fragments extends along a laser beam path. Here, we demonstrate within an enhance...
Gespeichert in:
| Hauptverfasser: | , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
25 November 2024
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| In: |
Optics letters
Year: 2024, Jahrgang: 49, Heft: 23, Pages: 6825-6828 |
| ISSN: | 1539-4794 |
| DOI: | 10.1364/OL.540612 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1364/OL.540612 Verlag, kostenfrei, Volltext: https://opg.optica.org/ol/abstract.cfm?uri=ol-49-23-6825 
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| Verfasserangaben: | Tobias Heldt, Jan-Hendrik Oelmann, Lennart Guth, Nick Lackmann, Thomas Pfeifer, and José R. Crespo López-Urrutia |
MARC
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| 520 | |a Velocity-map imaging (VMI) is a key tool for studying outgoing electrons or ions following optical strong-field interactions of atoms and molecules and provides good momentum resolution even if the source volume of the fragments extends along a laser beam path. Here, we demonstrate within an enhancement cavity how, independently of the focal Rayleigh length, counter-propagating pulses longitudinally compress the ionization volume down to few tens of micrometers. We observe nonlinear above-threshold ionization (ATI) processes confined to the spatial overlap of femtosecond pulses, whereas the shortened ionization volume makes an electrostatic lens unnecessary for VMI. | ||
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| 650 | 4 | |a Multiphoton ionization | |
| 650 | 4 | |a Spatial resolution | |
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