88 citations · 205 across the 10 of their papers we have counts for
10 papers
Shaper-based dispersion scan for the characterization of polarization-shaped laser fields
Darius Köhnke, Jan-Erik Havekost, Nick Robin Rother +4
We present a pulse-shaper-based dispersion-scan (d-scan) framework for the combined generation and characterization of polarization-tailored femtosecond laser fields. By integratin…
Bichromatic phase-control of interfering Autler-Townes spectra
T. Bayer, K. Eickhoff, D. Köhnke +1
We propose a new scheme to control the shape of the Autler-Townes (AT) doublet in the photoelectron spectrum from atomic resonance-enhanced multiphoton ionization (REMPI). The sche…
Ultrafast artificial intelligence: Machine learning with atomic-scale quantum systems
Thomas Pfeifer, Matthias Wollenhaupt, Manfred Lein
We train a model atom to recognize hand-written digits between 0 and 9, employing intense light--matter interaction as a computational resource. For training, individual images of…
Determination of atomic multiphoton ionization phases by trichromatic multichannel wave packet interferometry
K. Eickhoff, D. Köhnke, L. Feld +2
We present a multichannel photoelectron interferometry technique based on trichromatic pulse shaping for unambiguous determination of quantum phases in multiphoton ionization (MPI)…
Orbital angular momentum superposition states in transmission electron microscopy and bichromatic multiphoton ionization
K. Eickhoff, C. Rathje, D. Köhnke +5
The coherent control of electron beams and ultrafast electron wave packets dynamics have attracted significant attention in electron microscopy as well as in atomic physics. In ord…
Atomic photoionization dynamics in ultrashort cycloidal laser fields
T. Bayer, Ch. Philipp, K. Eickhoff +1
We present numerical simulations of ultrafast multiphoton ionization dynamics in a two-dimensional atomic model driven by co- and counterrotating circularly polarized single-color…
Maximum information photoelectron metrology
P. Hockett, C. Lux, M. Wollenhaupt +1
Photoelectron interferograms, manifested in photoelectron angular distributions (PADs), are a high-information, coherent observable. In order to obtain the maximum information from…
Complete Photoionization Experiments via Ultrafast Coherent Control with Polarization Multiplexing II: Numerics & Analysis Methodologies
P. Hockett, M. Wollenhaupt, C. Lux +1
The feasibility of complete photoionization experiments, in which the full set of photoionization matrix elements are determined, using multiphoton ionization schemes with polariza…
Complete photoionization experiments via ultra-fast coherent control with polarization-multiplexing
Paul Hockett, Matthias Wollenhaupt, Christian Lux +1
Photoelectron angular distributions (PADs) obtained from ionization of potassium atoms using moderately intense femtosecond IR fields (10Wcm) of various polariz…
Coherent strong-field control of multiple states by a single chirped femtosecond laser pulse
M Krug, T Bayer, M Wollenhaupt +4
We present a joint experimental and theoretical study on strong-field photo-ionization of sodium atoms using chirped femtosecond laser pulses. By tuning the chirp parameter, select…