SAMOP 2023 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 17: Interaction with Strong or Short Laser Pulses II (joint session A/MO)

A 17.4: Vortrag

Mittwoch, 8. März 2023, 15:30–15:45, F107

Dephasing effects in high-order harmonic generation from finite Su-Schrieffer-Heeger chains — •Christoph Jürß and Dieter Bauer — Insitute of Physics, University of Rostock, Germany

The Su-Schrieffer-Heeger (SSH) model describes a linear, one-dimensional chain that displays topological effects. Due to its simplicity, the SSH-model has been used to study numerous effects in topological insulators. The most interesting feature of topologically non-trivial insulators are their topologically protected edge states. It was shown in previous studies that the generation of high-order harmonics can be influenced by the topological nature of the solid and even by just the edge states themselves. In order to obtain more realistic simulated harmonic spectra, relaxation and dephasing effects should be taken into account. This is usually done for the bulk, i.e., with no edge states present. In this work, we implement dephasing for the finite SSH-model and compare the results to those from the respective bulk.