scholarly journals Elucidating ultrafast electron dynamics at surfaces using extreme ultraviolet (XUV) reflection–absorption spectroscopy

2018 ◽  
Vol 54 (34) ◽  
pp. 4216-4230 ◽  
Author(s):  
Somnath Biswas ◽  
Jakub Husek ◽  
L. Robert Baker
Keyword(s):  
Absorption Spectroscopy ◽  
Extreme Ultraviolet ◽  
Electron Dynamics ◽  
Time Resolved ◽  
Ultrafast Electron Dynamics

Time-resolved XUV reflection–absorption spectroscopy probes core-to-valence transitions to reveal state-specific electron dynamics at surfaces.

scholarly journals Attosecond transient absorption spooktroscopy: a ghost imaging approach to ultrafast absorption spectroscopy

2020 ◽  
Vol 22 (5) ◽  
pp. 2704-2712 ◽  
Author(s):  
Taran Driver ◽  
Siqi Li ◽  
Elio G. Champenois ◽  
Joseph Duris ◽  
Daniel Ratner ◽  
...  
Keyword(s):  
High Resolution ◽  
Absorption Spectroscopy ◽  
Transient Absorption ◽  
Transient Absorption Spectroscopy ◽  
Electron Dynamics ◽  
Ghost Imaging ◽  
X Ray ◽  
Imaging Approach ◽  
Ultrafast Electron Dynamics

Recently demonstrated isolated attosecond XFEL pulses should allow the probing of ultrafast electron dynamics at X-ray wavelengths. The authors use ghost imaging to enable high-resolution transient absorption spectroscopy at fluctuating XFEL sources.

scholarly journals Tracking dissociation dynamics of strong-field ionized 1,2-dibromoethane with femtosecond XUV transient absorption spectroscopy

2016 ◽  
Vol 18 (21) ◽  
pp. 14644-14653 ◽  
Author(s):  
Adam S. Chatterley ◽  
Florian Lackner ◽  
Daniel M. Neumark ◽  
Stephen R. Leone ◽  
Oliver Gessner
Keyword(s):  
Absorption Spectroscopy ◽  
Near Infrared ◽  
Transient Absorption ◽  
Extreme Ultraviolet ◽  
Strong Field ◽  
Transient Absorption Spectroscopy ◽  
Time Resolved ◽  
Strong Field Ionization ◽  
Dissociation Dynamics ◽  
Ultraviolet Absorption Spectroscopy

Using femtosecond time-resolved extreme ultraviolet absorption spectroscopy, the dissociation dynamics of the haloalkane 1,2-dibromoethane (DBE) have been explored following strong field ionization by femtosecond near infrared pulses at intensities between 7.5 × 1013 and 2.2 × 1014 W cm−2.

scholarly journals Ultrafast electron dynamics at water covered alkali adatoms adsorbed on Cu(111)

2015 ◽  
Vol 17 (13) ◽  
pp. 8441-8448 ◽  
Author(s):  
Michael Meyer ◽  
Ishita Agarwal ◽  
Martin Wolf ◽  
Uwe Bovensiepen
Keyword(s):  
Electron Dynamics ◽  
Time Resolved ◽  
Two Photon ◽  
Ultrafast Electron Dynamics

Here we report on the ultrafast electron dynamics of the alkalis Na, K, and Cs coadsorbed with D2O on Cu(111) surfaces, which we investigated with femtosecond time-resolved two-photon photoemission.

scholarly journals Time-resolved ARPES at LACUS: Band Structure and Ultrafast Electron Dynamics of Solids

2017 ◽  
Vol 71 (5) ◽  
pp. 273-277 ◽  
Author(s):  
Alberto Crepaldi ◽  
Silvan Roth ◽  
Gianmarco Gatti ◽  
ChristopherA. Arrell ◽  
José Ojeda ◽  
...  
Keyword(s):  
Band Structure ◽  
Electron Dynamics ◽  
Time Resolved ◽  
Ultrafast Electron Dynamics

scholarly journals Symmetry resolved atomic photoionization phase shift by attosecond coincidence metrology

2021 ◽  
Author(s):  
Wenyu Jiang ◽  
Gregory S. J. Armstrong ◽  
Jihong Tong ◽  
Yidan Xu ◽  
Zitan Zuo ◽  
...  
Keyword(s):  
Phase Shift ◽  
Partial Wave ◽  
Near Infrared ◽  
Extreme Ultraviolet ◽  
Phase Shifts ◽  
Cylindrical Symmetry ◽  
Partial Wave Analysis ◽  
Polarization Angle ◽  
Electron Dynamics ◽  
Ultrafast Electron Dynamics

Abstract Attosecond chronoscopy is central to the understanding of ultrafast electron dynamics from gas to condensed phase with attosecond temporal resolution. It has, however, not yet been able to determine the timing of individual partial waves, and steering their contribution has been a substantial challenge. Here, we develop a polarization-skewed attosecond chronoscopy to reveal their roles from the angle-resolved photoionization phase shifts in rare gas atoms. By scanning the relative polarization angle between an extreme-ultraviolet attosecond pulse train and a phase-locked near-infrared laser field serving as a partial wave meter, we break the cylindrical symmetry and observe an emission direction dependent phase shift in the photoionized electron momenta. The experimental observations are well supported by numerical simulations using the R-matrix with time-dependence method, and by analytical analysis using the soft-photon approximation. Our symmetry-resolved, partial-wave analysis identifies the transition rate and phase shifts of each individual ionization pathway in the attosecond photoelectron emission dynamics. Our findings provide critical insights into the ubiquitous attosecond optical timer and the underlying attosecond photoionization dynamics, thereby offer new perspectives for the control, manipulation, and exploration of ultrafast electron dynamics in complex systems.

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