TY - JOUR

T1 - Scattering of a twisted electron wavepacket by a finite laser pulse

AU - Александров, Иван Александрович

AU - Тумаков, Дмитрий Андреевич

AU - Кудлис, Андрей

AU - Зайцев, Владимир Алексеевич

AU - Розанов, Николай Николаевич

PY - 2022/9/29

Y1 - 2022/9/29

N2 - The behavior of a twisted electron colliding with a linearly polarized laser pulse is investigated within relativistic quantum mechanics. In order to better fit the real experimental conditions, we introduce a Gaussian spatial profile for the initial electron state as well as an envelope function for the laser pulse, so that both interacting objects have a finite size along the laser propagation direction. For this setup, we analyze the dynamics of various observable quantities regarding the electron state: the probability density, angular momentum, and mean values of the spatial coordinates. It is shown that the motion of a twisted wavepacket can be accurately described by averaging over classical trajectories with various directions of the transverse momentum component. On the other hand, full quantum simulations demonstrate that the ring structure of the wavepacket in the transverse plane can be significantly distorted, leading to large uncertainties in the total angular momentum of the electron. This effect remains after the interaction once the laser pulse has a nonzero electric-field area.

AB - The behavior of a twisted electron colliding with a linearly polarized laser pulse is investigated within relativistic quantum mechanics. In order to better fit the real experimental conditions, we introduce a Gaussian spatial profile for the initial electron state as well as an envelope function for the laser pulse, so that both interacting objects have a finite size along the laser propagation direction. For this setup, we analyze the dynamics of various observable quantities regarding the electron state: the probability density, angular momentum, and mean values of the spatial coordinates. It is shown that the motion of a twisted wavepacket can be accurately described by averaging over classical trajectories with various directions of the transverse momentum component. On the other hand, full quantum simulations demonstrate that the ring structure of the wavepacket in the transverse plane can be significantly distorted, leading to large uncertainties in the total angular momentum of the electron. This effect remains after the interaction once the laser pulse has a nonzero electric-field area.

UR - http://www.scopus.com/inward/record.url?scp=85139307324&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/b56fd338-ac79-3d3f-943f-7cffdfa1a85a/

U2 - 10.1103/PhysRevA.106.033119

DO - 10.1103/PhysRevA.106.033119

M3 - Article

VL - 106

JO - Physical Review A - Atomic, Molecular, and Optical Physics

JF - Physical Review A - Atomic, Molecular, and Optical Physics

SN - 1050-2947

IS - 3

M1 - 033119

ER -