72 citations · 127 across the 3 of their papers we have counts for
8 papers · 1 filter
Instantaneous optical selection rule for independent control of valley currents
Wanzhu He, Xiaosong Zhu, Liang Li +4
We reveal an instantaneous optical valley selection rule that illuminates the coupling between the instantaneous optical chirality of the driving laser field and the chirality of v…
Attosecond All-Optical Retrieval of Valley Polarization via Circular Dichroism in Transient Absorption
Wenqing Li, Xiaosong Zhu, Pengfei Lan +5
We propose a scheme for retrieving the ultrafast valley polarization (VP) dynamics in two-dimensional hexagonal materials via attosecond circular dichroism (CD) transient absorptio…
High-purity valley-polarized currents induced by bichromatic optical fields in two-dimensional materials
Wenqing Li, Xiaosong Zhu, Liang Li +4
Producing currents predominantly from a single valley, namely valley-polarized currents, at optical-cycle timescales is an important aspect of the petahertz valleytronics, yet it r…
Determination of Electron Band Structure using Temporal Interferometry
Liang Li, Pengfei Lan, Lixin He +3
We propose an all-optical method to directly reconstruct the band structure of semiconductors. Our scheme is based on the temporal Young's interferometer realized by high harmonic…
Molecular rotation movie filmed with high-harmonic generation
Yanqing He, Lixin He, Pengfei Lan +5
Direct imaging of molecular dynamics is a long-standing goal in physics and chemistry. As an emerging tool, high-harmonic spectroscopy (HHS) enables accessing molecular dynamics on…
Reciprocal-space-trajectory perspective on high harmonic generation in solids
Liang Li, Pengfei Lan, Xiaosong Zhu +4
We revisit the mechanism of high harmonic generation (HHG) from solids by comparing HHG in laser fields with different ellipticities but constant maximum amplitude. It is shown tha…