Abstract

We study the photoelectron momentum distribution from strong-field ionization of atomic ${p_ \pm}$ orbitals in an orthogonally polarized two-color (OTC) laser field. We find that the atomic ${p_ \pm}$ orbitals are deformed in the OTC field, which significantly varies the left–right asymmetries of the electron yield in the photoelectron momentum distribution. By developing a strong-field approximation model that includes the orbital deformation effect, we show that the orbital deformation has a significant effect on the instantaneous ionization rate, while it plays a negligible role in the subcycle electron interference. By taking the spin-orbit coupling into account, we further show that the orbital deformation effect can be used to produce angular-resolved spin-polarized photoelectrons. Our study paves the way for producing spatially separated high degree spin-polarized electrons.

© 2022 Optica Publishing Group

Revealing the effect of atomic orbitals on the phase distribution of an ionizing electron wave packet with circularly polarized two-color laser fields

Kun Liu, Min Li, Wenhai Xie, Keyu Guo, Siqiang Luo, Jiaqing Yan, Yueming Zhou, and Peixiang Lu
Opt. Express 28(8) 12439-12449 (2020)

Two-color attosecond chronoscope

Jianan Wu, Jiayin Che, Fabin Zhang, Chao Chen, Weiyan Li, Guoguo Xin, and Yanjun Chen
Opt. Express 31(13) 21038-21047 (2023)

Identifying backward-rescattering photoelectron hologram with orthogonal two-color laser fields

Yang Li, Yueming Zhou, Mingrui He, Min Li, and Peixiang Lu
Opt. Express 24(21) 23697-23706 (2016)

Exchange effects in strong-field ionization of the excited lithium ion induced by one- and two-component laser fields

D. Habibović and D. B. Milošević
J. Opt. Soc. Am. B 40(8) 2201-2210 (2023)

Nonadiabatic strong field ionization of noble gas atoms in elliptically polarized laser pulses

ZhiLei Xiao, Wei Quan, ShaoGang Yu, XuanYang Lai, XiaoJun Liu, ZhengRong Wei, and Jing Chen
Opt. Express 30(9) 14873-14885 (2022)