SKM 2023 – wissenschaftliches Programm

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KFM: Fachverband Kristalline Festkörper und deren Mikrostruktur

KFM 6: Poster

KFM 6.45: Poster

Dienstag, 28. März 2023, 17:00–19:00, P3

Laser induced damage threshold (LIDT) of additively manufactured components in photonics — •Moritz Huesmann, Yannic Toschke, and Mirco Imlau — Institute of Physics, Osnabrück University, Germany

Nowadays, desktop additive manufacturing technologies, e.g., 3D-printing based on thermoplastics (filaments), are widely available. They are increasingly finding their way into research laboratories in photonics due to the possibility to manufacture optomechanical components, such as versitale optical adapters, optomechanical mounts and sample holders. While the mechanical properties of the thermoplastics have been studied intensively in literature, nearly nothing is known about the laser damage threshold (LIDT) of these materials. Without this knowledge, the use in optical setups is limited to laser beams with moderate to low average power for safety reasons. In the second step, the damage threshold for PLA and PETG of different color was systematically determined under the exposure with intense femtosecond and nanosecond laser pulses. We discuss the determined LIDT values in the framework of applications in photonics, but also analyze the photophysical processes of the laser-induced damages based on a detailed topographic inspection. Financial support by the BMBF within Open Photonik Pro (project 13N15230, optocubes).