High pressure increases THz 13X in 2D semiconductor gallium telluride, and enables fine tuning by manipulating crystal and electronic structure

https://phys.org/news/2025-12-high-pressure-terahertz-emission-2d.html

"using diamond anvil cell... >150 fs phase shift under high pressure, indicating transient current process precedes optical rectification... pressure alters intrinsic resonant frequency/ initial charge distribution, which determines amplitude, frequency, THz phase... hydrostatic pressure could be used to probe, informing improved new THz-active materials' bandwidth, efficiency, and tunability, including those modified through chemical-pressure-based doping... topological materials, spintronics, heterostructures"