Disentangling Intracycle Interferences in Photoelectron Momentum Distributions Using Orthogonal Two-Color Laser Fields.

  title={Disentangling Intracycle Interferences in Photoelectron Momentum Distributions Using Orthogonal Two-Color Laser Fields.},
  author={Xinhua Xie and Tian Wang and Shaogang Yu and XuanYang Lai and Stefan Roither and Daniil V. Kartashov and Andrius Baltuska and Xiaojun Liu and Andr{\'e} Staudte and Markus Kitzler},
  journal={Physical review letters},
  volume={119 24},
We use orthogonally polarized two-color (OTC) laser pulses to separate quantum paths in the multiphoton ionization of Ar atoms. Our OTC pulses consist of 400 and 800 nm light at a relative intensity ratio of 10∶1. We find a hitherto unobserved interference in the photoelectron momentum distribution, which exhibits a strong dependence on the relative phase of the OTC pulse. Analysis of model calculations reveals that the interference is caused by quantum pathways from nonadjacent quarter cycles. 

Figures and Topics from this paper

Separating intracycle interferences in photoelectron momentum distributions by a polarization-gated pulse
We theoretically demonstrate the feasibility of separation of various of intracycle interferences in photoelectron momentum distributions (PMDs) with a polarization-gated (PG) pulse constructed by aExpand
Quantum control and characterization of ultrafast ionization with orthogonal two-color laser pulses
  • H. Agueny
  • Physics, Medicine
  • Scientific Reports
  • 2020
It is shown that with the use of the OTC scheme, one can tailor the properties of the control pulse to lead to enhancement of the ionization rate through the Autler-Townes effect without affecting the dynamic interference, which is shown to result from constructive interferences between partial photoelectron waves having opposite-parity. Expand
Manipulating dynamical Rabi-splitting with two-color laser pulses.
The employed OTC scheme is shown to be efficient for controlling the dynamic Rabi-splitting through the control of quantum-path interferences involved in one-photon and two- photon absorption processes. Expand
Attoclock Photoelectron Interferometry with Two-Color Corotating Circular Fields to Probe the Phase and the Amplitude of Emitting Wave Packets.
Developing a Fourier-transform algorithm on energy-resolved photoelectron interferograms, this work can directly extract the amplitude and the phase of emitting electron wave packets from strong-field ionization. Expand
Experimental Separation of Subcycle Ionization Bursts in Strong-Field Double Ionization of H_{2}.
We report on the unambiguous observation of the subcycle ionization bursts in sequential strong-field double ionization of H_{2} and their disentanglement in molecular frame photoelectron angularExpand
Universal Description of the Attoclock with Two-Color Corotating Circular Fields.
It is shown that, when monitoring the intensity ratio, the double-pointer attoclock geometry with corotating circular fields can be universally mimicked as the spatially rotating temporal double-slit experiments with the variable slit width, which can be used to probe and control strong-field ionization. Expand
Subfemtosecond Tracing of Molecular Dynamics during Strong-Field Interaction.
A method where the two intrinsic timescales of a molecule, the slow nuclear motion and the fast electronic motion, are simultaneously measured in a photoelectron photoion coincidence experiment is introduced and experimentally demonstrated. Expand
Tomographic Extraction of the Internuclear Separation Based on Two-Center Interference with Aligned Diatomic Molecules.
A tomographic method is demonstrated for the first time to extract the molecular internuclear separation, providing a more straightforward approach of molecular imaging, in comparison with, e.g., laser-induced electron diffraction and fixed-angle broadband laser-driven electron scattering. Expand
Revealing laser-coherent electron features using phase-of-the-phase spectroscopy
Phase-of-the-phase (PoP) spectroscopy is extended to two-color laser fields having a circularly counter-rotating polarization. In particular, the higher harmonics of the (two-color) phase informationExpand
Time-dependent density-functional theory of high-order harmonic generation from noble-gas atoms driven by orthogonally polarized two-color laser fields
An orthogonally polarized two-color (OTC) field of frequency ratio $1:2$ is known to generate both odd and even harmonic spectra in the mutually orthogonal directions of the fundamental and theExpand


Streaking temporal double-slit interference by an orthogonal two-color laser field.
Investigation of electron momentum distributions from single ionization of Ar by two orthogonally polarized laser pulses of different color shows that the visibility of the interference fringes depends on the degree of the which-way information determined by the controllable phase between the two pulses. Expand
Energy-Resolved Ultrashort Delays of Photoelectron Emission Clocked by Orthogonal Two-Color Laser Fields.
A phase-controlled orthogonal two-color femtosecond laser pulse is employed to probe the time delay of photoelectron emission in the strong-field ionization of atoms and the relative phase shift between the main and sideband peaks is distinguished. Expand
Subcycle control of electron-electron correlation in double ionization.
It is shown that the two-electron emission dynamics in nonsequential double ionization can be controlled by tuning the subcycle shape of the electric field of the OTC pulses. Expand
Time double-slit interferences in strong-field tunneling ionization
Oscillations in the electron emission spectrum of atoms ionized by few-cycle laser pulses were recently identified as a time double-slit interference [F. Lindner et al., Phys. Rev. Lett. 95, 040401Expand
Laser-sub-cycle two-dimensional electron-momentum mapping using orthogonal two-color fields
We study laser-sub-cycle control over electron trajectories concomitantly in space and time using orthogonally polarized two-color laser fields. We compare experimental photoelectron spectra of neonExpand
Attosecond probe of valence-electron wave packets by subcycle sculpted laser fields.
This work shows that the measurement of subcycle electron wave-packet interference patterns can serve as a tool to retrieve the structure and dynamics of the valence-electron cloud in atoms on a sub-10-as time scale. Expand
Two-dimensional attosecond electron wave-packet interferometry.
  • Xinhua Xie
  • Physics, Medicine
  • Physical review letters
  • 2015
We propose a two-dimensional interferometry based on the electron wave-packet interference by using a cycle-shaped orthogonally polarized two-color laser field. With such a method, the subcycle andExpand
Nonadiabatic Electron Dynamics in Orthogonal Two-Color Laser Fields with Comparable Intensities.
Through these methods, the underlying mechanisms of the subcycle electron dynamics are identified and it is found that both the nonadiabatic effects and the Coulomb potential play very important roles. Expand
Spatial-temporal control of interferences of multiple tunneling photoelectron wave packets
We theoretically study the control of the interferences of multiple tunneling photoelectron wave packets in both temporal and spatial domains by an orthogonally polarized two-color laser pulse.Expand
Revealing the Sub-Barrier Phase using a Spatiotemporal Interferometer with Orthogonal Two-Color Laser Fields of Comparable Intensity.
This study shows that the tunneling process transfers the initial phase onto momentum distribution and has the implication that the sub-barrier phase plays an indispensable role in photoelectron interference processes. Expand