Paper 14092-12
Paper 14092-12
EUV harmonic generation in MgO shaped by nonlinear propagation
13 April 2026 • 17:20 - 17:40 CEST | Churchill (Niveau/Level 1)
Abstract
High-harmonic generation (HHG) in solids provides a compact route to extreme-ultraviolet (EUV) sources. In bulk materials, the high density strongly reshapes the driving laser pulse, affecting its intensity, spectrum, and temporal profile, which directly influences harmonic emission. We generate high-order EUV harmonics in MgO crystals up to the 31st order using few-cycle, 1550 nm light-pulses from a fiber laser, and study their spectra as a function of laser intensity, crystal orientation and thickness as well as its focal position. Observed correlations between infrared reshaping and harmonic spectra highlight the central role of nonlinear propagation in shaping EUV emission.
Presenter
Anastasiia Mikhneva
GPM UMR 6634, CNRS - University of Rouen Normandie - INSA Rouen Normandie (France), CORIA UMR 6634, CNRS - University of Rouen Normandie -INSA Rouen Normandie (France)
Anastasiia Mikhneva is a PhD student at the GPM laboratory of the University of Rouen. She received her Master’s degree from ITMO University, Russia, where she worked on fiber-optic–based sensors, and later worked as an engineer on fiber-optic gyroscopes. Her current research focuses on compact extreme-ultraviolet sources based on high-harmonic generation in solids for applications in next-generation atom probe tomography.