Mainz 2026 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 40: Poster – Photonics

Q 40.7: Poster

Wednesday, March 4, 2026, 17:00–19:00, Philo 1. OG

Optical feedback for the photo-induced deformation of thin films — •Kenneth Lütticke and Carsten Henkel — Universität Potsdam, Institut für Physik und Astronomie, Germany

Photo-induced deformations in photoactive polymer thin films have been intensively studied for decades due to their potential use in inscribing topographical relief patterns with high information density. These deformations arise from trans–cis photoisomerization cycles, and various theoretical models have been developed to bridge the molecular processes with the resulting macroscopic structures [1,2,3]. While several theoretical frameworks address mass transport or anisotropic reorientation [4,5], they fall short of predicting realistic deformation scales or feedback effects during holographic exposure. In this work, we analyze the possibility of an optical feedback where holographic illumination gets reinforced by the growing relief, as an alternative to the conventional orientation approach.

[1] M. Saphiannikova, V. Toshchevikov and N. Tverdokhleb, Soft Matter 20 (2024) 2688
[2] M. Merkel, A. Elizabeth, M. Böckmann, H. Mönig, C. Denz and N. L. Doltsinis, J. Chem. Phys. 158 (2023) 104905
[3] H. Leblond, R. Barille, S. Ahmadi-Kandjani, J.-M. Nunzi, E. Ortyl and S. Kucharski, J. Phys. B 42 (2009) 205401
[4] F. Ledoyen, P. Bouchard, D. Hennequin and M. Cormier Phys. Rev. A 41 (1990), 4895
[5] M. Saphiannikova, V. Toshchevikov, and J. Ilnytskyi, Nonlin. Opt. Quantum Opt. 41 (2010) 27

Keywords: Photosensitive Materials; Light–Matter Interaction in Nanostructures; Photo-Induced Deformation; Surface Relief Grating; Optomechanical Coupling