14 November 2025
DESY
Europe/Berlin timezone

A Differentiable Physics Model for Automated Inverse Design in Optics

14 Nov 2025, 13:05
10m
Flash Seminar Room (DESY)

Flash Seminar Room

DESY

Speaker

Henrik Tuennermann (FS-LA (Research))

Description

Designing complex optical coatings, such as dispersion-managed mirrors for ultrafast lasers, is a high-dimensional inverse problem traditionally relying on iterative, expert-guided methods. We present a machine learning framework that automates this process by employing an autoencoder with a differentiable, physics-based decoder. This decoder, which analytically solves Maxwell's equations via the Transfer Matrix Method, allows the network to learn the design mapping from target specifications alone. The framework successfully generated a multi-objective dispersive mirror design with performance metrics that match those produced by established commercial optimization software, offering a powerful alternative for rapid and automated design exploration.

Author

Utsa Chattopadhyay (FS-PRI (Photonics Research and Development))

Co-authors

Christoph Heyl (FS-PRI (Photonics Research and Development)) Henrik Tuennermann (FS-LA (Research)) Ingmar Hartl (FS-LA (Lasergruppe)) Prof. Nihat Ay (TUHH)

Presentation materials