Orientation-dependent production of normal Archimedean and dynamical spirals for revealing orbital symmetries in diatomic multi-orbital molecules

HB Ambalampitiya, JM Ngoko Djiokap - Communications Physics, 2024 - nature.com
The discovery and measurements of symmetric normal Archimedean spirals from atomic
ionization by a pair of time-delayed broadband oppositely circularly polarized pulses …

Transformation by Rabi oscillation of the photoelectron momentum distribution produced by oppositely circularly polarized laser pulses

EL Fulton, JM Ngoko Djiokap - Physical Review A, 2024 - APS
We report on the potential of coherent Rabi-type dynamics and the formation of the Autler-
Townes (AT) doublet to dramatically transform the patterns emerging in the photoelectron …

Ouroboros-pattern-like electron spirals by synchronous crossed chirped laser pulses

L Pedersen, JM Ngoko Djiokap - Physical Review A, 2024 - APS
By means of analytical calculations based on first-order perturbation theory within the
electric dipole, laser, and rotating wave approximations, we investigate the linear (in …

Vortex information in multiphoton scalar pair production

HH Fan, CW Zhang, S Tang, BS Xie - arXiv preprint arXiv:2411.11067, 2024 - arxiv.org
Vortex information of scalar pair production in circularly polarized field is investigated in the
multiphoton regime. We find that vortex orientation is related to the intrinsic orbital angular …

Chirp effects on photoelectron vortices in multiphoton ionization by chirped circularly polarized attosecond pulses

R Wang, Q Zhang, Y Qian - Physical Review A, 2025 - APS
We theoretically investigate the multiphoton ionization of the xenon atom by pairs of linearly
chirped, time-delayed circularly polarized pulses. The numerical results are obtained by …