2017
DOI: 10.1103/physreva.95.033427
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Forward-backward asymmetry of photoemission inC60excited by few-cycle laser pulses

Abstract: 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 puls… Show more

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Cited by 7 publications
(10 citation statements)
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References 67 publications
(89 reference statements)
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“…The standard pulse parameters used throughout this paper are: IR frequency ω IR = 0.1 Ry corresponding to cycle time τ IR = 3.04 fs; IR pulse length T IR = τ IR ; XUV frequency ω X = 3 Ry; XUV pulse length T X = τ IR /6 = 0.51 fs which means 5 XUV cycles in the pulse. Because of the short IR pulse length T IR = τ IR the Carrier Envelop Phase (CEP), namely the phase of the oscillatory pattern with respect to pulse envelop, acquires a large influence [23][24][25]. We shall briefly discuss its impact in Section 2.3.…”
Section: Theoretical Framework 21 Laser Setupmentioning
confidence: 99%
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“…The standard pulse parameters used throughout this paper are: IR frequency ω IR = 0.1 Ry corresponding to cycle time τ IR = 3.04 fs; IR pulse length T IR = τ IR ; XUV frequency ω X = 3 Ry; XUV pulse length T X = τ IR /6 = 0.51 fs which means 5 XUV cycles in the pulse. Because of the short IR pulse length T IR = τ IR the Carrier Envelop Phase (CEP), namely the phase of the oscillatory pattern with respect to pulse envelop, acquires a large influence [23][24][25]. We shall briefly discuss its impact in Section 2.3.…”
Section: Theoretical Framework 21 Laser Setupmentioning
confidence: 99%
“…Ionization can be measured as such or energy resolved as in Photo-Electron Spectra (PES) [17][18][19][20] or even in an angular/energy resolved manner [11]. The (energy integrated) Photo-emission Angular Distribution (PAD), is also a fruitful observable [21,22], which is known to deliver interesting information already for femtosecond pulses [23][24][25].…”
Section: Introductionmentioning
confidence: 99%
“…The independence from the system is plausible because very short pulses give the system little chance to develop its dynamical response such that the shape of the external laser pulse dominates the process and this is the same in all systems. The independence from the CEP is also plausible because too short pulses have basically one or two dominating peaks which gives little chances for ponderomotive effects which otherwise can produce a difference between low-energy and high-energy emission [24]. The emission maxima (corresponding to η ∼ ±1) lie at φ CEP = 90 • and φ CEP = 270 • .…”
Section: 2mentioning
confidence: 99%
“…In a recent work, the Angular-Resolved PES (ARPES) of C 60 were calculated as a function of the Carrier Envelope Phase (CEP) using a fully quantum-mechanical approach based on Time Dependent Density Functional Theory (TDDFT) and looking in particular at the asymmetry of the angular distribution for different kinetic energies of the emitted electrons [24]. These theoretical simulations allowed to reproduce the experimentally found dependencies on laser parameters, particularly on pulse length and CEP.…”
Section: Introductionmentioning
confidence: 99%
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