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Here we lists some of our recent or selected highlights in this research direction.
Strong-field-induced molecular breakup
This theoretical study reveals the counterintuitive finding that molecules subjected to intense, extreme-ultraviolet femtosecond laser pulses can stabilize against ionization but not dissociation. The phenomenon is fully characterized by extending high-frequency Floquet theory to account for nuclear motion.
L. Yue and L. B. Madsen, Physical Review Letters 115, 033001 (2015)
This theoretical work shows that the joint kinetic energy spectra of electrons and fragmented nuclei in laser-induced dissociative ionization of molecules encode information about both sub-cycle and inter-cycle ionization dynamics.
L. Yue and L. B. Madsen, Physical Review A 93, 031401(R) (2016) (Editors’ Suggestion)
This joint experimental and theoretical study explores how the simplest heteronuclear molecule, HeH⁺, breaks apart when exposed to intense, ultrashort laser pulses. The kinetic energy of the fragments reveal different fragmentation pathways, offering new insights into how molecules behave under extreme laser conditions.
P. Wustelt*, F. Oppermann, L. Yue, M. Möller, T. Stöhlker, S. Gräfe, M. Lein, G. G. Paulus*, A. M. Sayler, Physical Review Letters 121, 073203 (2018)
All related references:
M. Möller, A. M. Sayler, P. Wustelt, L. Yue, F. Grossmann, S. Gräfe and G. G. Paulus, "Goldilocks Zone for Enhanced Ionization in Strong Laser Fields", arXiv 1812.07758 (2018)
L. Yue*, P. Wustelt, A. M. Sayler, F. Oppermann, M. Lein, G. G. Paulus and S. Gräfe*, "Strong-field polarizability-enhanced dissociative ionization", Physical Review A 98, 043418 (2018)
P. Wustelt*, F. Oppermann, L. Yue, M. Möller, T. Stöhlker, S. Gräfe, M. Lein, G. G. Paulus*, A. M. Sayler, "Heteronuclear limit of strong-field ionization: Fragmentation of HeH+ by intense ultrashort laser pulses", Physical Review Letters 121, 073203 (2018)
L. Yue, S. Bauch and L. B. Madsen, "Electron correlation in tunneling ionization of diatomic molecules: An application of the many-electron weak-field asymptotic theory with a generalized-active-space partition scheme", Physical Review A 96, 043408 (2017)
L. Yue and L. B. Madsen, "Inter- and intracycle interference effects in strong-field dissociative ionization", Physical Review A 93, 031401(R) (2016) (Editors’ Suggestion)
L. Yue and L. B. Madsen, "Characterization of molecular breakup by very intense femtosecond xuv laser pulses", Physical Review Letters 115, 033001 (2015)
L. Yue and L. B. Madsen, "Dissociative ionization of H2+ using intense femtosecond xuv laser pulses", Physical Review A 90, 063408 (2014)
L. Yue and L. B. Madsen, "Dissociation and dissociative ionization of H2+ using the time-dependent surface flux method", Physical Review A 88, 063420 (2013)
Attosecond spectroscopy of molecular structure and dynamics
This theoretical study explores the impact of nuclear motion on attosecond transient absorption spectroscopy, demonstrating that, beyond ultrafast electron dynamics, vibrational and dissociation dynamics can also be effectively probed.
J. E. Bækhøj, L. Yue, and L. B. Madsen, Physical Review A 91, 043408 (2015)
Laser-induced electron diffraction (LIED) is a molecular-scale electron microscopy that captures clean snapshots of a molecule’s geometry with subatomic picometer and attosecond spatiotemporal resolution. This collaborative work demonstrates that LIED can be used to identify and track the stretching and bending motion of a linear triatomic molecule in an excited state.
K. Amini, M. Sclafani, T. Steinle, A.-T. Le, A. Sanchez, C. Müller, J. Steinmetzer, L. Yue, J. R. M. Saavedra, M. Hemmer, M. Lewenstein, R. Moshammer, T. Pfeifer, M. G. Pullen, J. Ullrich, B. Wolter, R. Moszynski, F. J. G. de Abajo, C. D. Lin, S. Gräfe and J. Biegert*, Proceedings of the National Academy of Sciences USA 116, 8173 (2019)
All related references:
K. Amini, M. Sclafani, T. Steinle, A.-T. Le, A. Sanchez, C. Müller, J. Steinmetzer, L. Yue, J. R. M. Saavedra, M. Hemmer, M. Lewenstein, R. Moshammer, T. Pfeifer, M. G. Pullen, J. Ullrich, B. Wolter, R. Moszynski, F. J. G. de Abajo, C. D. Lin, S. Gräfe and J. Biegert*, "Imaging the Renner-Teller effect using laser-induced electron diffraction", Proceedings of the National Academy of Sciences USA 116, 8173 (2019)
J. J. Rørstad, N. S. E. Ravn, L. Yue* and L. B. Madsen, "Attosecond transient-absorption spectroscopy of polar molecules", Physical Review A 98, 053401 (2018)
M. Paul, L. Yue, S. Gräfe*, "Imprints of the molecular electronic structure in the photoelectron spectra of strong-field ionized asymmetric triatomic model molecules", Physical Review Letters 120, 233202 (2018)
M. Paul, L. Yue*, S. Gräfe*, "Strong-field ionization of asymmetric triatomic model molecules by few-cycle circularly polarized laser pulses", Journal of Modern Optics 64, 1104 (2017)
L. Yue and L. B. Madsen, "Inter- and intracycle interference effects in strong-field dissociative ionization", Physical Review A 93, 031401(R) (2016) (Editors’ Suggestion)
J. E. Bækhøj, L. Yue, and L. B. Madsen, "Nuclear-motion effects in attosecond transient-absorption spectroscopy of molecules", Physical Review A 91, 043408 (2015)
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