2017
DOI: 10.1103/physrevlett.118.203202
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High-Harmonic Generation Enhanced by Dynamical Electron Correlation

Abstract: We theoretically study multielectron effects in high-harmonic generation (HHG), using all-electron first-principles simulations for a one-dimensional (1D) model atom. In addition to usual plateau and cutoff (from a cation in the present case, since the neutral is immediately ionized), we find a prominent resonance peak far above the plateau and a second plateau extended beyond the first cutoff. These features originate from the dication response enhanced by orders of magnitude due to the action of the Coulomb … Show more

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Cited by 33 publications
(29 citation statements)
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“…78 These features are a clear manifestation of electron correlation. 30 In molecules, the description of the physics beyond the HHG spectroscopy is more complex than in atomic systems. In fact, together with the many-electron dynamics, there is also the possibility for the electrons to recombine with multiple atomic centers.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…78 These features are a clear manifestation of electron correlation. 30 In molecules, the description of the physics beyond the HHG spectroscopy is more complex than in atomic systems. In fact, together with the many-electron dynamics, there is also the possibility for the electrons to recombine with multiple atomic centers.…”
Section: Discussionmentioning
confidence: 99%
“…The proper treatment of the time-dependent electronic wavepacket, and therefore of the many-electron dynamics, under the influence of the laser field is obtained by propagating the time-dependent Schrödinger equation (TDSE). Real-time timedependent electronic-structure approaches can be conceptually separated in two classes: (1) real-time time-dependent wave function (RT-TDWF) based methods [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] and (2) real-time timedependent density functional theory (RT-TDDFT). [36][37][38][39][40][41][42][43][44][45][46] In RT-TDWF, the many-electron dynamics is described by a correlated time-dependent wave function, while in RT-TDDFT, the key quantity is the time-dependent density.…”
Section: Introductionmentioning
confidence: 99%
“…[78] These features are a clear manifestation of electron correlation. [30] In molecules the description of the physics beyond the HHG spectroscopy is more complex than in atomic systems. In fact, together with the many-electron dynamics there is also the orbital contributions to some specific spectral features of HHG for N 2 , O 2 , CO 2 , F 2 , N 2 O and CO molecules.…”
Section: Discussionmentioning
confidence: 99%
“…The proper treatment of the time-dependent electronic wavepacket, and therefore of the many-electron dynamics, under the influence of the laser field is obtained by propagating the time-dependent Schrödinger equation (TDSE). Real-time time-dependent electronicstructure approaches can be conceptually separated in two classes: 1) real-time timedependent wave function based methods (RT-TDWF), [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] and 2) real-time timedependent density functional theory (RT-TDDFT). [36][37][38][39][40][41][42][43][44][45][46] In RT-TDWF the many-electron dynamics is described by a correlated time-dependent wave function, while in RT-TDDFT the key quantity is the time-dependent density.…”
Section: Introductionmentioning
confidence: 99%
“…The proper treatment of the time-dependent electronic wavepacket, and therefore of the many-electron dynamics, under the influence of the laser field is obtained by propagating the time-dependent Schrödinger equation (TDSE). Real-time time-dependent electronicstructure approaches can be conceptually separated in two classes: 1) real-time timedependent wave function based methods (RT-TDWF), [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] and 2) real-time timedependent density functional theory (RT-TDDFT). [36][37][38][39][40][41][42][43][44][45][46] In RT-TDWF the many-electron dynamics is described by a correlated time-dependent wave function, while in RT-TDDFT the key quantity is the time-dependent density.…”
Section: Introductionmentioning
confidence: 99%