Instantaneous multiphoton ionization rate and initial distribution of electron momentum

Bondar, Denys I.

doi:10.1103/physreva.78.015405

Cited by 42 publications

(14 citation statements)

References 22 publications

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“…Nonadiabatic tunnelling refers to deviations that arise at higher frequencies-when the field variation becomes too fast. We do not observe the wavelength scaling predicted by nonadiabatic tunneling [8,9]. In fact, for the same laser intensity we measure the same width for electrons that tunnel at 800 and 1400 nm.…”

mentioning

confidence: 53%

“…(8) in Ref. [9]. In the nonadiabatic theory the momentum distribution scales with the laser wavelength as shown in the dashed curves of Fig.…”

mentioning

confidence: 84%

“…This is one assumption at the core of tunneling theory. Incorporating corrections for nonadiabatic effects introduces a wavelength dependence to the tunneling rate [8] and electron momentum spectrum [9].…”

mentioning

confidence: 99%

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Direct Test of Laser Tunneling with Electron Momentum Imaging

et al. 2010

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mentioning

confidence: 53%

“…(8) in Ref. [9]. In the nonadiabatic theory the momentum distribution scales with the laser wavelength as shown in the dashed curves of Fig.…”

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confidence: 84%

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Direct Test of Laser Tunneling with Electron Momentum Imaging

et al. 2010

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“…Other nonadiabatic theories exist which provide initial conditions at the tunnel exit [7,32], but they are limited to the special case of linear (and circular) polarization.…”

Section: B Nonadiabatic Ctmcmentioning

confidence: 98%

Interpreting electron-momentum distributions and nonadiabaticity in strong-field ionization

et al. 2014

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We investigate whether nonadiabatic effects, rather than an initial longitudinal momentum spread, can explain the additional final momentum spread measured in strong-field ionization experiments with ultrafast laser pulses. We find that, when used consistently, a well-known nonadiabatic theory which includes an initial velocity offset yields results similar to adiabatic theory. By "consistent use" we mean that nonadiabatic theory is used also for field strength calibration of the experiment. The additional momentum spread can be accounted for by including an initial longitudinal momentum spread, as was done previously in the adiabatic case. Interestingly, when the experimental intensity is calibrated using a common in situ calibration method based on adiabatic assumptions, the nonadiabatic theory improves upon the adiabatic theory. This result highlights the uncertainty associated with using theory-based calibration methods, which are the most common way of calibrating experimental data in attosecond science.

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“…An alternative and more general method to calculate the ionization rate has been shown using the Landau-Dykhne method [10,16]. A detailed discussion of the Landau-Dykhne method can be found in [17][18][19].…”

Section: Comparison Of Ionization Modelsmentioning

confidence: 99%

Interplay of mulitphoton and tunneling ionization in short-wavelength-driven high-order harmonic generation

et al. 2011

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High-order harmonic generation efficiency is theoretically modeled and compared with experiments using 400 and 800 nm driver pulses. It is shown that, for a short drive wavelength and a Keldysh parameter larger than 1, the Ammosov-Delone-Krainov (ADK) ionization model does not give a good agreement between theory and experiment. Since the ADK ionization model only accounts for tunnel ionization, it underestimates the yield of low-order harmonics from the wings of the driver pulse. In contrast, the Yudin-Ivanov ionization model [Phys. Rev. A 64, 013409 (2001)], which accounts for both tunnel and multiphoton ionization, gives much better agreement with the experimental results.

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Instantaneous multiphoton ionization rate and initial distribution of electron momentum

Cited by 42 publications

References 22 publications

Direct Test of Laser Tunneling with Electron Momentum Imaging

Direct Test of Laser Tunneling with Electron Momentum Imaging

Interpreting electron-momentum distributions and nonadiabaticity in strong-field ionization

Interplay of mulitphoton and tunneling ionization in short-wavelength-driven high-order harmonic generation

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