Phys.org March 22, 2019
Researchers in Germany performed high-harmonic generation measurements from silicon and quartz to demonstrate that the polarization states of the harmonics are not only determined by crystal symmetries, but can be dynamically controlled, as a consequence of the intertwined interband and intraband electronic dynamics. Using symmetry-dynamics duality they generated coherent circularly polarized harmonics from elliptically polarized pulses. The method is versatile and expected to find important applications in future studies of novel quantum materials such as strongly correlated materials, topological insulators, and magnetic materials… read more. Open Access TECHNICAL ARTICLEÂ
A 3D image of a supercrystal from phase-field simulations using the software ?-PRO. Credit: L-Q Chen Group, Penn State