Multiscale electromagnetic modeling of nonlinearities in nanostructures (A06*)

• Subject Area: Optics, Quantum Optics and Physics of Atoms, Molecules and Plasmas ; Theoretical Condensed Matter Physics
• Term: since 2023
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 398816777

The project (Busch/David/Peschel) merges the theoretical efforts of former projects (Busch/Peschel) and (David/Gräfe) to bundle gained competences in optics, and to allow for large-scale electrodynamic simulations of nonlinearities in connection with a suitable description of optically excited nonlinear materials. As optical wavelengths and typical dimensions of quantum objects differ by orders of magnitude, such simulations must cover multiple scales from the atomic up to the device level. Typical examples are the nonlinear modification of optical scattering from millimeter-sized metallic tips by excited molecules close to the tip apex, optically induced tunneling through nanogap structures resulting in a modification of grating diffraction, or the interaction and self-organization of counterpropagating pulses in an atomically thin nonlinear film.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1375: Nonlinear Optics down to Atomic scales (NOA)
• Applicant Institution: Friedrich-Schiller-Universität Jena
• Project Heads: Professor Dr. Kurt Busch; Dr. Christin David; Professor Dr. Ulf Peschel