Time-delay control of reversible electron spirals using arbitrarily chirped attosecond pulses

MM Yusoff, JM Ngoko Djiokap - Physical Review A, 2024 - APS
Photoionization through single-photon absorption by two synchronous, linearly chirped,
oppositely circularly polarized, attosecond pulses is known [NJ Strandquist, Jr., and JM …

Reversible electron spirals by chirped attopulses at zero time delay

NJ Strandquist Jr, JM Ngoko Djiokap - Physical Review A, 2022 - APS
A class of linear, spiral phenomena is discovered in the photoelectron momentum
distribution when studying photoionization of S-state atoms by a pair of linearly chirped …

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 …

Energy-and angle-resolved coherent control on photoelectron dynamics by a directionality orthogonal double-slit interferometry

M Liu, WC Jiang - Optics Express, 2024 - opg.optica.org
We propose a directionality orthogonal double-slit interferometry to control photoelectron
dynamics in energy-and angle-resolved fashion. The two orthogonal components of …