Orbital-resolved photoelectron momentum distributions of neon atoms in bichromatic elliptically polarized attosecond pulses

Wang, Rongrong; Ma, Mao-Yun; Wang, Junping; Guan, Zhong; Jiao, Zhi-Hong; Li, Wei; Wang, Guoli; Chen, Jianhong; Zhao, Song-Feng

doi:10.1140/epjd/s10053-022-00471-x

Cited by 2 publications

(2 citation statements)

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“…Theoretically, m-dependent strong-field ionization has been studied based on several different methods, such as the PPT model [13,14,22], strong-field approximation [23][24][25][26], adiabatic approximation [27], the time-dependent Schrödinger equation (TDSE) [28][29][30][31][32][33][34][35][36][37], the time-dependent R-matrix [38,39], the analytical R-matrix [40,41] and so on. For neutral atoms, it is well known that the tunneling ionization is preferential as the electron counter-rotates with the CPL field [13,14,32].…”

Section: Introductionmentioning

confidence: 99%

“…For neutral atoms, it is well known that the tunneling ionization is preferential as the electron counter-rotates with the CPL field [13,14,32]. For single-photon ionization, it has been demonstrated theoretically that the corotating case is more favorable both for atoms [36,37,42,43] and fluorine anions [38]. The situation becomes more complicated for multiphoton ionization since excited bound states of atoms may play a very important role during ionization.…”

Section: Introductionmentioning

confidence: 99%

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Role of excitation in the electron rotational asymmetry in circularly polarized laser fields

Wen

Jing

Sun

et al. 2023

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

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We comparatively study electron rotational asymmetries in photoionization of the excited hydrogen atom and photodetachment of the fluorine anion in single circularly polarized laser fields by numerically solving the three-dimensional time-dependent Schrödinger equation (3D-TDSE). We first show that single-photon ionization (or detachment) is more favored for the electron initially corotates with respect to the direction of the laser field. More interestingly, we systematically demonstrate the electron rotational asymmetry of the excited hydrogen atom is completely contrary to that of the fluorine anion in multiphoton ionization (or detachment) regime, which can be attributed to the role played by excited bound states by analyzing the total excitation probability in the excited hydrogen atom. Furthermore, we also confirmed that the electron rotational asymmetry of 2p+ and 2p− degenerate orbitals in the excited hydrogen atom changes when the ionization mechanism switches from three-photon to over-the-barrier.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Role of excitation in the electron rotational asymmetry in circularly polarized laser fields

Wen

Jing

Sun

et al. 2023

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

Self Cite

View full text Add to dashboard Cite

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Comparative study of electron vortices in photoionization of molecules and atoms by counter-rotating circularly polarized laser pulses

Wang

Wen

et al. 2023

J. Opt. Soc. Am. B

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We comparatively study the effect of orbital symmetry on vortex patterns in photoelectron momentum distributions (PMDs) of perfectly aligned H2 and N2 molecules and their companion atom Ar exposed to a pair of delayed counter-rotating circularly polarized lasers by numerically solving the two-dimensional time-dependent Schrödinger equation. We show that vortex patterns in PMDs strongly depend on the orbital symmetry of atoms and molecules, and numbers of spiral arms in PMDs of N2, H2, and Ar are quite different even though they have nearly identical ionization potentials. We also confirm that vortex structures in PMDs of the highest occupied molecular orbit (HOMO)-2 for N2 are quite different from those of the HOMO but similar to those of Ar. Furthermore, vortex patterns in PMDs of molecules are also sensitive to internuclear distances and alignment angles, which provides more possibilities for controlling the coherent interference of electronic wave packets in comparison with atoms.

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Orbital-resolved photoelectron momentum distributions of neon atoms in bichromatic elliptically polarized attosecond pulses

Cited by 2 publications

References 50 publications

Role of excitation in the electron rotational asymmetry in circularly polarized laser fields

Role of excitation in the electron rotational asymmetry in circularly polarized laser fields

Comparative study of electron vortices in photoionization of molecules and atoms by counter-rotating circularly polarized laser pulses

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