Polarization-resolved analysis to solid high-order harmonic generation. (5th May 2022)

• Record Type: Journal Article
• Authors: Huang, Tengfei; Li, Liang; Li, Jiapeng; Zhu, Xiaosong; Lan, Pengfei; Lu, Peixiang
• Is Part Of: Journal of physics. Volume 55:Number 9(2022)
• Publication Date: 2022-05-05
• Subjects: polarization-resolved analysis -- high-order harmonic generation -- electron reciprocal space trajectory; Atoms -- Periodicals; Molecules -- Periodicals; Optics -- Periodicals; Nuclear physics -- Periodicals; 539.6
• DOI: 10.1088/1361-6455/ac65c7
• Languages: English
• ISSNs: 0953-4075

Abstract

Abstract: We propose a quantitative polarization-resolved quantum trajectory approach to analyse the solid high-order harmonic generation (HHG). By using this approach, we can distinguish the ionization channels of different polarization components in HHG. We take the HHG in hBN under two counter-rotating circularly polarized fields as an example. We find that the right and left circular polarized high harmonics are contributed by the electron trajectories with the ionization channel around the high symmetry points K and K ′ respectively. Furthermore, the intensity of the right and left circular polarization harmonics is determined by the interference between these electron trajectories. Our work offers a quantitatively polarization-resolved analysis to understand the underlying mechanism in HHG in the view of electron reciprocal space trajectory.