In this talk I present our new results on sum/difference frequency generation in 2D material. We also discuss the possibility to tune non-linear response using static or ThZ electric fields, you can find the slides of my talk here:
SumFrequencyGeneration.odp

and the two reference papers here:

Sum frequency generation from real-time simulations in two-dimensional crystals
MN. Pionteck, M. Grüning, S. Sanna, C. Attaccalite, arXiv preprint arXiv:2503.07095 (2025)
Tunable second harmonic generation in 2D materials: comparison of different strategies
S Grillo, E. Cannuccia, M Palummo, O Pulci, C Attaccalite, SciPost Physics Core 7 (4), 081 (2024)