5 papers
Attosecond Reconstruction of Strain Tensors via Electronic Fingerprints
Jing Li, Jiayu Yan, Guoyong Yuan +3
We demonstrate an attosecond transient absorption spectroscopy (ATAS) scheme for reconstructing strain tensors in two-dimensional materials. Using strained graphene as a prototype…
All-optical reconstruction of valley polarization through helicity-resolved high-harmonic generation
Xiaoyu Bu, Yan Meng, Xiaohui Zhao +2
We theoretically investigate valley-resolved high-order harmonic generation in gapped graphene driven by elliptically polarized laser fields. Using two-band density-matrix simulati…
Effect of Berry connection on attosecond transient absorption spectroscopy in gapped graphene
Jiayu Yan, Hongxuan Er, Wei Dang +4
We investigate the attosecond transient absorption spectroscopy (ATAS) in gapped graphene by numerically solving the four-band density matrix equations. Our results reveal that, in…
Isolated elliptically-polarized attosecond pulse generation in gapped graphene driven by linearly polarized laser fields
Xinru Song, Xiaoyu Bu, Xiaohui Zhao +3
We theoretically investigate high-order harmonic generation (HHG) and its ellipticity in gapped graphene, driven by a femtosecond short-pulse laser at various orientation angles, e…
Attosecond transient absorption spectroscopy in monolayer hexagonal boron nitride
Jiayu Yan, Chenkai Zhu, Rongxiang Zhang +2
We simulate the attosecond transient absorption spectroscopy (ATAS) of monolayer hexagonal boron nitride (hBN) using the time-dependent density functional theory and two-band densi…