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PUBDB-2024-01858

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Picosecond pulse-shaping for strong three-dimensional field-free alignment of generic asymmetric-top molecules

Mullins, T.DESY* ; Karamatskos, E. T.CFEL*DESY* ; Wiese, J.CFEL*Extern*XFEL.EU*DESY* ; Onvlee, J.CFEL*Extern*XFEL.EU*DESY* ; Rouzée, A.Extern*XFEL.EU* ; Yachmenev, A.CFEL*DESY* ; Trippel, S.CFEL*XFEL.EU*DESY* ; Küpper, J. (Corresponding author)CFEL*XFEL.EU*DESY*

2022

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Report No.: arXiv:2009.08157

Abstract: Fixing molecules in space is a crucial step for the imaging of molecular structure and dynamics. Here, we demonstrate three-dimensional (3D) field-free alignment of the prototypical asymmetric top molecule indole using elliptically polarized, shaped, off-resonant laser pulses. A truncated laser pulse is produced using a combination of extreme linear chirping and controlled phase and amplitude shaping using a spatial-light-modulator (SLM) based pulse shaper of a broadband laser pulse. The angular confinement is detected through velocity-map imaging of H$^+$ and C$^{2+}$ fragments resulting from strong-field ionization and Coulomb explosion of the aligned molecules by intense femtosecond laser pulses. The achieved three-dimensional alignment is characterized by comparing the result of ion-velocity-map measurements for different alignment directions and for different times during and after the alignment laser pulse to accurate computational results. The achieved strong three-dimensional field-free alignment of $\langle \cos^{2}\delta \rangle=0.89$ demonstrates the feasibility of both, strong three-dimensional alignment of generic complex molecules and its quantitative characterization.

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Contributing Institute(s):

1. CFEL-CMI (FS-CFEL-CMI)
2. beauftragt von UNI (UNI/CUI)
3. Uni Hamburg / Experimentalphysik (UNI/EXP)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. MEDEA - Molecular Electron Dynamics investigated by IntensE Fields and Attosecond Pulses (641789) (641789)
3. DFG project 390715994 - EXC 2056: CUI: Advanced Imaging of Matter (390715994) (390715994)
4. COMOTION - Controlling the Motion of Complex Molecules and Particles (614507) (614507)

Experiment(s):

1. Experiments at CFEL

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Database coverage:
Published

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article Mullins, T.DESY* ; Karamatskos, E. T.CFEL*DESY* ; Wiese, J.CFEL*Extern*XFEL.EU*DESY* ; Onvlee, J.CFEL*Extern*XFEL.EU*DESY* ; Rouzée, A.Extern*XFEL.EU* ; Yachmenev, A.CFEL*DESY* ; Trippel, S.CFEL*XFEL.EU*DESY* ; Küpper, J. (Corresponding author)CFEL*XFEL.EU*DESY*
Picosecond pulse-shaping for strong three-dimensional field-free alignment of generic asymmetric-top molecules
Nature Communications 13(1), 1431 (2022) [10.1038/s41467-022-28951-z]2022     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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