Carrier Envelope Phase Dependence of High-order Harmonics from Monolayer MoS₂

The discovery of high-order harmonic generation (HHG) in solids has enabled new approaches to analyze and control electron dynamics and quantum properties in condensed matter systems. Here, we investigate the carrier-envelope phase-dependence of high-order harmonic generation from monolayer MoS₂ driven by a high-intensity, mid-infrared, few-cycle pulse through time-dependent density functional theory calculations. Our results show different behavior for harmonics in different spectral ranges and with different polarization states, which suggest interference between multiple conduction bands and effects arising from the Berry curvature of the band structure. These results which are supported by experimental studies may provide new insight into sub-cycle topological control in 2D systems.