Phonon dynamics of a bulk WSe crystal excited by ultrashort near-infrared pulses
arXiv:2502.18799 · doi:10.1016/j.ssc.2025.116002
Abstract
Pump-probe reflectivity measurements have been performed on a single crystal of tungsten diselenide (WSe) using ultrashort near-infrared pulses. The behavior is well reproduced in simulations superimposing three oscillations (7.45, 7.49 and 7.7 THz) with different phases. The Fourier transform spectrum features small peaks at 4.0 and 11.5 THz along with intense peaks at around 7.5 THz.
arXiv comment4 pages, 4 figures
References in corpus (6)
- Lattice dynamics in mono- and few-layer sheets of WS2 and WSe2
- Spin-valley locking in the normal state of a transition-metal dichalocogenide superconductor
- Influence of pulse width and detuning on coherent phonon generation
- Spectrally resolved detection in transient-reflectivity measurements of coherent optical phonons in diamond
- Signature of lattice dynamics in twisted 2D homo/hetero-bilayers
- Valley Depolarization in Monolayer Transition-Metal Dichalcogenides with Zone-Corner Acoustic Phonons