145 citations · 679 across the 18 of their papers we have counts for
20 papers
Reconstructing Molecular-Ion Quantum States with Two-Color Strong-Field Scattering
Dina S. Eissa, Felipe Morales, Abraham Camacho Garibay +6
Strong-field ionization of molecules can prepare coherent superpositions of ionic states whose amplitudes and relative phases govern the ensuing ultrafast dynamics, but accessing t…
Highly spin-polarized multi-GeV electron beams generated by single-species plasma photocathodes
Zan Nie, Fei Li, Felipe Morales +11
High-gradient and high-efficiency acceleration in plasma-based accelerators has been demonstrated, showing its potential as the building block for a future collider operating at th…
Evidence of ac-Stark-shifted resonances in intense two-color circularly polarized laser fields
Philipp Stammer, Serguei Patchkovskii, Felipe Morales
We report on the appearance of a structure at low energies in the photo-electron momentum distribution of the hydrogen atom exposed to two-color counter-rotating bi-circular laser…
Imprinting chirality on atoms using synthetic chiral light fields
Nicola Mayer, Serguei Patchkovskii, Felipe Morales +2
Atoms are usually thought of as achiral objects. However, one can construct superpositions of atomic states that are chiral [1]. Here we show how to excite such superpositions with…
Generation and characterisation of isolated attosecond pulses at 100kHz repetition rate
Tobias Witting, Mikhail Osolodkov, Felix Schell +8
The generation of coherent light pulses in the extreme ultraviolet (XUV) spectral region with attosecond pulse durations constitutes the foundation of the field of attosecond scien…
In Situ Generation of High-Energy Spin-Polarized Electrons in a Beam-Driven Plasma Wakefield Accelerator
Zan Nie, Fei Li, Felipe Morales +9
In situ generation of a high-energy, high-current, spin-polarized electron beam is an outstanding scientific challenge to the development of plasma-based accelerators for high-ener…
N Lasing: Gain and Absorption in the Presence of Rotational Coherence
Marianna Lytova, Maria Richter, Felipe Morales +3
We simulate the pump-probe experiments of lasing in molecular nitrogen ions with particular interest on the effects of rotational wave-packet dynamics. Our computations demonstrate…
Rotational Quantum Beat Lasing Without Inversion
Maria Richter, Marianna Lytova, Felipe Morales +4
In standard lasers, light amplification requires population inversion between an upper and a lower state to break the reciprocity between absorption and stimulated emission. Howeve…
Amplification of intense light fields by nearly free electrons
Mary Matthews, Felipe Morales, Alexander Patas +10
Light can be used to modify and control properties of media, as in the case of electromagnetically induced transparency or, more recently, for the generation of slow light or brigh…
Control of attosecond light polarization in two-color bi-circular fields
Álvaro Jiménez-Galán, Nick Zhavoronkov, David Ayuso +6
We develop theoretically and confirm both numerically and experimentally a comprehensive analytical model which describes the propensity rules in the emission of circularly polariz…
Ultrafast Preparation and Detection of Ring Currents in Single Atoms
Sebastian Eckart, Maksim Kunitski, Martin Richter +16
Quantum particles can penetrate potential barriers by tunneling (1). If that barrier is rotating, the tunneling process is modified (2,3). This is typical for electrons in atoms, m…
Time-resolved high harmonic spectroscopy of dynamical symmetry breaking in bi-circular laser fields
Álvaro Jiménez-Galán, Nickolai Zhavoronkov, Marcel Schloz +2
The bi-circular scheme for high harmonic generation, which combines two counter-rotating circular fields with frequency ratio 2:1, has recently permitted to generate high harmonics…
Electron spin polarization in strong-field ionization of Xenon atoms
Alexander Hartung, Felipe Morales, Maksim Kunitski +10
As a fundamental property of the electron, the spin plays a decisive role in the electronic structure of matter from solids to molecules and atoms, e.g. causing magnetism. Yet, des…
Attosecond control of spin polarization in electron-ion recollision driven by intense tailored fields
David Ayuso, Álvaro Jiménez-Galán, Felipe Morales +2
We show that electrons recolliding with the ionic core upon tunnel ionization of noble gas atoms driven by a strong circularly polarized laser field in combination with a counter-r…
Two-particle interference of electron pairs on a molecular level
M. Waitz, D. Metz, J. Lower +19
We investigate the photo-doubleionization of molecules with 400 eV photons. We find that the emitted electrons do not show any sign of two-center interference fringes in thei…
Opportunities for detecting ring currents using the attoclock set-up
Jivesh Kaushal, Felipe Morales, Olga Smirnova
Strong field ionization by circularly polarized laser fields from initial states with internal orbital momentum has interesting propensity rule: electrons counter-rotating with res…
Spin-Orbit Larmor Clock for Ionisation Times in One-Photon and Strong-Field Regimes
Jivesh Kaushal, Felipe Morales, Lisa Torlina +2
Photoionisation is a process where absorption of one or several photons liberates an electron and creates a hole in a quantum system, such as an atom or a molecule. Is it faster to…
Photoelectron angular distributions from aligned molecules using the R-matrix method
Alex G Harvey, Danilo S Brambila, Felipe Morales +1
We present a new extension of the UKRmol electron-molecule scattering code suite, which allows one to compute ab initio photoionization and photorecombination amplitudes for comple…
Interpreting Attoclock Measurements of Tunnelling Times
Lisa Torlina, Felipe Morales, Jivesh Kaushal +8
Resolving in time the dynamics of light absorption by atoms and molecules, and the electronic rearrangement this induces, is among the most challenging goals of attosecond spectros…
CDENPROP: Transition matrix elements involving continuum states
Alex G. Harvey, Danilo S. Brambila, Felipe Morales +1
Transition matrix elements between electronic states where one electron can be in the continuum are required for a wide range of applications of the molecular R-matrix method. Thes…