Carrier-envelope phase effects in above-threshold ionization of atomic hydrogen

Wallace, William; Pullen, Michael G.; Laban, Dane Edward; Ghafur, O.; Xu, Han; Palmer, Adam James; Hanne, G F; Bartschat, Klaus; Grum-Grzhimailo, A.N.; Quiney, Harry M.; Litvinyuk, Igor; Sang, R. T.; Kielpinski, David

doi:10.1088/1367-2630/15/3/033002

Cited by 16 publications

(21 citation statements)

References 14 publications

(20 reference statements)

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“…ATI of atomic H is perhaps the best match for this condition, but it is certainly not easy to realize, as it requires an atomic hydrogen source and subtraction of background molecular hydrogen contributions [20][21][22]. In contrast, ATI of Xe cannot currently be simulated with ab initio calculations, but is easily measured and has been used extensively to determine the relative CEP, e.g., using the carrier-envelope phase meter (CEPM) [11].…”

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confidence: 99%

Accurate determination of absolute carrier-envelope phase dependence using photo-ionization

et al. 2015

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The carrier-envelope phase (CEP) dependence of few-cycle above-threshold ionization (ATI) of Xe is calibrated for use as a reference measurement for determining and controlling the absolute CEP in other interactions. This is achieved by referencing the CEP-dependent ATI measurements of Xe to measurements of atomic H, which are in turn referenced to ab initio calculations for atomic H. This allows for the accurate determination of the absolute CEP dependence of Xe ATI, which enables relatively easy determination of the offset between the relative CEP measured and/or controlled by typical devices and the absolute CEP in the interaction.

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confidence: 99%

Accurate determination of absolute carrier-envelope phase dependence using photo-ionization

et al. 2015

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“…Since it is difficult to obtain a reliable estimate for σ P click without a long data series, we should be cautious about applying Eqs. (10) and (11) for values of P click close to 1.…”

Section: Principles For Analysing Strong-field Ionisation Datamentioning

confidence: 88%

“…A map of the amplitude A 0 (E c , I) was constructed, covering a wide range of electron cutoff energies E c and laser peak intensities I. A map of the phase offset was also constructed [11], but its precision was not high enough to admit useful interpretation and we omit it here. Figure 6 shows the map of asymmetry amplitude A 0 (E c , I) and compares it to the predictions derived from 3D-TDSE simulations.…”

Section: Carrier-envelope Phase Effectsmentioning

confidence: 99%

“…So far, it appears that the exact pulse shape is relevant for the high-energy plateau electrons of energy 5U p (see, e.g., [26]), but is not very important at lower energies [10,16]. However, both the intensity [9,16] and the carrier-envelope phase [11] are critical parameters over the entire electron energy range.…”

Section: A Theoretical Predictions Of Strong-field Ionisation Dynamicsmentioning

confidence: 99%

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Benchmarking strong-field ionization with atomic hydrogen

Kielpinski¹,

Sang²,

Litvinyuk³

2014

J. Phys. B: At. Mol. Opt. Phys.

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As the simplest atomic system, the hydrogen atom plays a key benchmarking role in laser and quantum physics. Atomic hydrogen is a widely used atomic test system for theoretical calculations of strong-field ionization, since approximate theories can be directly compared to numerical solutions of the time-dependent Schrödinger equation. However, relatively little experimental data is available for comparison to these calculations, since atomic hydrogen sources are difficult to construct and use. We review the existing experimental results on strong-field ionization of atomic hydrogen in multi-cycle and few-cycle laser pulses. Quantitative agreement has been achieved between experiment and theoretical predictions at the 10% uncertainty level, and has been used to develop an intensity calibration method with 1% uncertainty. Such quantitative agreement can be used to certify experimental techniques as being free from systematic errors, guaranteeing the accuracy of data obtained on species other than H. We review the experimental and theoretical techniques that enable these results.

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“…As for the interaction between the intense laser pulses whose duration is short and matter, the carrier envolope phase (CEP) of pulses will have a direct effect on the phenomena occur, such as the high-order harmonic generation [1] and above threshold ionization [2] etc. The influence of CEP on the ionization of molecules was investigated in this paper.…”

Section: Investigation Of the Carrier Envelope Phase Effect For Molecmentioning

confidence: 99%