SAMOP 2023 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 22: Poster II

Q 22.77: Poster

Dienstag, 7. März 2023, 16:30–19:00, Empore Lichthof

Inverse design of dielectric laser accelerators and Smith-Purcell radiators — •Manuel Konrad, Michael Seidling, Urs Haeusler, Roy Shiloh, and Peter Hommelhoff — Department Physik, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91058 Erlangen

Computational design and especially the inverse design approach are powerful tools for the design of nanophotonic structures. In inverse design, the structure is optimized according to an objective function, using an arbitrarily large number of parameters. The great advantage of inverse design over other schemes lies in the independence of the computational effort from the number of parameters, meaning one can efficiently explore a large parameter space. This often results in complex structures, which differ drastically from designs based on human intuition. With this design tool, various applications have already been demonstrated, such as highly efficient waveguides, complex optical demultiplexers, and different kinds of optical circuitry [1], but also for quantum correlations [2] and highly efficient light coupling to photonic nanostructures, used in dielectric laser acceleration of electrons [3]. We apply inverse design to the dielectric laser acceleration of electrons and Smith-Purcell radiation [4], while staying within the well-tested confines of silicon photonics. Our aim is to improve the performance of the current generation of structures with this novel technique.

[1] Molesky et al. Nature Photon 12, 659 (2018) [2] Dahan et al. Science 373, eabj7128 (2021) [3] Sapra et al. Science 367, 79 (2020) [4] Haeusler et al. ACS Photonics, 9, 2, 664 (2022)