Imaging of carrier-envelope phase effects in above-threshold ionization with intense few-cycle laser fields

Kling, Matthias F.; Rauschenberger, J.; Verhoef, A. J.; Hasović, E.; Uphues, Thorsten; Milošević, D. B.; Müller, H. G.; Vrakking, Marc J. J.

doi:10.1088/1367-2630/10/2/025024

Cited by 98 publications

(84 citation statements)

References 45 publications

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“…Interestingly, a couple of theoretical calculations have shown that the parts of PES related to electron recollisions are more sensitive to CEP than those parts related to electrons emitted directly [5,9,[19][20][21]. Experimentally, the dependence of high-energy PES on the CEP has been explored for atoms, e.g., xenon [16,22], argon [23], krypton [22], as well as for small-sized dimer molecules, e.g., N 2 and O 2 [24]. Recently, it has been studied in solids, such as tungsten [25] and gold nanotips [26] which were found to be efficient and controllable nanoemitters of extreme ultraviolet (XUV) electrons, thus allowing to investigate ultrafast electron dynamics in solids at an attosecond time scale, for a recent review see Ref.…”

Section: Introductionmentioning

confidence: 99%

Forward-backward asymmetry of photoemission inC60excited by few-cycle laser pulses

Gao¹,

Dinh²,

Reinhard³

et al. 2017

Phys. Rev. A

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We theoretically analyze angle-resolved photo-electron spectra (ARPES) generated by the interaction of C60 with intense, short laser pulses. In particular, we focus on the impact of the carrier-envelope phase (CEP) onto the angular distribution. The electronic dynamics is described by time-dependent density functional theory, and the ionic background of C60 is approximated by a particularly designed jellium model. Our results show a clear dependence of the angular distributions onto the CEP for very short pulses covering only very few laser cycles, which disappears for longer pulses. For the specific laser parameters used in a recent experiments, a very good agreement is obtained. Furthermore, the asymmetry is found to depend on the energy of the emitted photoelectrons. The strong influence of the angular asymmetry of electron emission onto the CEP and pulse duration suggests to use this sensitivity as a means to analyze the structure of few-cycle laser pulses.

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Section: Introductionmentioning

confidence: 99%

Forward-backward asymmetry of photoemission inC60excited by few-cycle laser pulses

Gao¹,

Dinh²,

Reinhard³

et al. 2017

Phys. Rev. A

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“…The main difference between a few-cycle pulse and a multicycle one is the strong dependence of the laser electric field on the so-called Carrier Envelope Phase (CEP) [12,13]. The electric field in a few-cycle pulse can be characterized by its duration and by the CEP.…”

Section: Introductionmentioning

confidence: 99%

Electron-momentum distributions and photoelectron spectra of atoms driven by an intense spatially inhomogeneous field

et al. 2013

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We use three dimensional time-dependent Schrödinger equation (3D-TDSE) to calculate angular electron momentum distributions and photoelectron spectra of atoms driven by spatially inhomogeneous fields. An example for such inhomogeneous fields is the locally enhanced field induced by resonant plasmons, appearing at surfaces of metallic nanoparticles, nanotips and gold bow-tie shape nanostructures. Our studies show that the inhomogeneity of the laser electric field plays an important role in the above threshold ionization process in the tunneling regime, causing significant modifications to the electron momentum distributions and photoelectron spectra, while its effects in the multiphoton regime appear to be negligible. Indeed, through tunneling ATI process, one can obtain higher energy electrons as well as high degree of asymmetry in the momentum space map. In this study we consider near infrared laser fields with intensities in the mid-10 14 W/cm 2 range and we use linear approximation to describe their spatial dependence. We show that in this case it is possible to drive electrons with energies in the near-keV regime. Furthermore, we study how the carrier envelope phase influences the emission of ATI photoelectrons for few-cycle pulses. Our quantum mechanical calculations are fully supported by their classical counterparts.

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“…Typically in such methods, CEP values are estimated by measuring the CEP dependence of highly nonlinear signal and comparing the results with numerical simulations. For example, plasmonic sensors 40,41 , stereo-ATI (above-threshold-ionisation) [42][43][44][45] , velocity map imaging [46][47][48][49] and high harmonic generation 50,51 have been used for such purposes. With the help of a polarization gating technique, the CEP of multi-cycle pulses can be obtained 52 .…”

Section: Discussionmentioning

confidence: 99%

Frequency-resolved optical gating capable of carrier-envelope phase determination

2013

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Recent progress of the coherent light synthesis technology has brought the generation of single-cycle pulses within our reach. To exploit the full potential of such a single-cycle pulse in any applications, it is highly important to obtain the full information of its electric field. Here we propose a novel pulse characterization scheme, which enables us to determine not only the intensity and phase profiles of ultrashort pulses but also their absolute carrier-envelope phase values. The method is based on a combination of frequency-resolved optical gating and electro-optic sampling, which can be extended to a self-referencing scheme to determine the electric field evolution of few-cycle ultrashort pulses. We have experimentally demonstrated the technique to characterize sub-single-cycle infrared pulses, and numerically studied the capability of the scheme to incorporate a self-referencing technique and to extend the wavelength range to visible region.

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Imaging of carrier-envelope phase effects in above-threshold ionization with intense few-cycle laser fields

Cited by 98 publications

References 45 publications

Forward-backward asymmetry of photoemission inC60excited by few-cycle laser pulses

Forward-backward asymmetry of photoemission inC60excited by few-cycle laser pulses

Electron-momentum distributions and photoelectron spectra of atoms driven by an intense spatially inhomogeneous field

Frequency-resolved optical gating capable of carrier-envelope phase determination

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