Attosecond Ionization and Tunneling Delay Time Measurements in Helium

  title={Attosecond Ionization and Tunneling Delay Time Measurements in Helium},
  author={Petrissa Eckle and Adrian N. Pfeiffer and Claudio Cirelli and Andr{\'e} Staudte and Reinhard D{\"o}rner and H. G. Muller and Markus B{\"u}ttiker and Ursula Keller},
  pages={1525 - 1529}
It is well established that electrons can escape from atoms through tunneling under the influence of strong laser fields, but the timing of the process has been controversial and far too rapid to probe in detail. We used attosecond angular streaking to place an upper limit of 34 attoseconds and an intensity-averaged upper limit of 12 attoseconds on the tunneling delay time in strong field ionization of a helium atom. The ionization field derives from 5.5-femtosecond-long near-infrared laser… 
Laser induced tunneling ionization in less than 12 attoseconds measured by attosecond angular streaking
  • C. CirelliA. N. Pfeiffer U. Keller
  • Physics
    CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference
  • 2009
It is typically assumed that electrons can escape from atoms through tunneling when exposed to strong laser fields, but the timing of the process has been controversial, and far too rapid to probe in
Determination of the Ionization Time Using Attosecond Photoelectron Interferometry.
A novel attosecond photoelectron interferometer is proposed, which is based on the interference of the direct and near-forward rescattering electron wave packets, to determine the time information characterizing the tunneling process.
Full experimental determination of tunneling time with attosecond-scale streaking method
Tunneling is one of the most fundamental and ubiquitous processes in the quantum world. The question of how long a particle takes to tunnel through a potential barrier has sparked a long-standing
Introduction to attosecond time-delays in photoionization
This tutorial presents an introduction to the interaction of light and matter on the attosecond timescale. Our aim is to detail the theoretical description of ultra-short time-delays, and to relate
Introduction to attosecond delays in photoionization
This tutorial presents an introduction to the interaction of light and matter on the attosecond timescale. Our aim is to detail the theoretical description of ultra-short time delays and to relate
Ultrafast resolution of tunneling delay time
The question of how long a tunneling particle spends inside the barrier region has remained unresolved since the early days of quantum mechanics. The main theoretical contenders, such as the
Resolving strong-field tunneling ionization with a temporal double-slit interferometer
Laser-induced tunneling ionization is one of the most fundamental and ubiquitous quantum processes and it initiates various ultrafast phenomena in intense laser-atom and laser-molecule interactions.
Quantum interference in strong-field ionization by a linearly polarized laser pulse and its relevance to tunnel exit time and momentum
We investigate the liberation of an atomic electron by a linearly polarized single-cycle nearinfrared laser pulse having a peak intensity that ensures tunneling. Based on phase space analysis and
Attoclock with bicircular laser fields as a probe of velocity-dependent tunnel-exit positions
Strong-field ionization of atoms can be investigated on the attosecond time scale by using the attoclock method, i.e. by observing the peak of the photoelectron momentum distribution (PMD) after
Attoclock reveals geometry for laser-induced tunneling
Tunneling plays a central role in the interaction of matter with intense laser pulses, and also in time-resolved measurements on the attosecond timescale. A strong laser field influences the binding


Attosecond real-time observation of electron tunnelling in atoms
The real-time observation of this most elementary step in strong-field interactions: light-induced electron tunnelling is reported, and the process is found to deplete atomic bound states in sharp steps lasting several hundred attoseconds, suggesting a new technique, attose Cond Tunnelling, for probing short-lived, transient states of atoms or molecules with high temporal resolution.
Atomic physics with super-high intensity lasers
We review the phenonomena which occur in multiphoton physics when the electric field of the applied laser radiation becomes comparable with the Coulomb field strength seen by an electron in the
Plasma perspective on strong field multiphoton ionization.
  • Corkum
  • Physics
    Physical review letters
  • 1993
During strong-field multiphoton ionization, a wave packet is formed each time the laser field passes its maximum value, and one important parameter which determines the strength of these effects is the rate at which the wave packet spreads in the direction perpendicular to the laser electric field.
Recoil-ion and electron momentum spectroscopy: reaction-microscopes
Recoil-ion and electron momentum spectroscopy is a rapidly developing technique that allows one to measure the vector momenta of several ions and electrons resulting from atomic or molecular
Laser-Induced Electron Tunneling and Diffraction
It is shown that the momentum distribution of the extracted electron carries the fingerprint of the highest occupied molecular orbital, whereas the elastically scattered electrons reveal the position of the nuclear components of the molecule.
Measurements of above-threshold ionization electron spectra in an elliptically polarized field a function of the ellipticity are presented. In the rescattering regime, electron yields quickly drop w
Generation of intense, carrier-envelope phase-locked few-cycle laser pulses through filamentation
Intense, well-controlled light pulses with only a few optical cycles start to play a crucial role in many fields of physics, such as attosecond science. We present an extremely simple and robust
Carrier-envelope offset phase control: A novel concept for absolute optical frequency measurement and ultrashort pulse generation
Abstract.The shortest pulses periodically emitted directly from a mode-locked Ti:sapphire laser are approaching the two-optical-cycle range. In this region, the phase of the optical carrier with
Barrier interaction time in tunneling
Over sixty years ago, it was suggested that there is a time associated with the passage of a particle under a tunneling barrier. The existence of such a time is now well accepted; in fact the time
Front propagation in evanescent media
We investigate the time evolution of waves in evanescent media generated by a source within this medium and observed at some distance away from the location of the source. The aim is to find a