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Q: Fachverband Quantenoptik und Photonik

Q 77: Photonics – 3D Printing

Q 77.4: Vortrag

Freitag, 6. März 2026, 15:15–15:30, P 2

Characterization of thermodynamic properties of photoresist for 3D printing — •Fernando Lopez-Rodriguez, Robert Horvat, Leander Siegle, and Harald Gießen — 4th Physics Institute and Research Center SCoPE, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany

3D printing by two-photon polymerization for fabrication of micro-optical components is a widely used and a constantly developing field. The broad range of applications is continuously increasing, as 3D printing is adopted in areas from basic and applied science to manufacturing, quantum technologies, and bio-medical applications. Given the broad field of applications, optical and mechanical material properties, are of high interest. The thermal expansion coefficient alpha(T) and the refractive index n(T) are not known for most photoresists, especially at liquid helium temperatures, which are crucial for quantum applications. In our work, we present a micro-sized, on-fibre dilatometer device based on a 3D-printed Fabry-Pérot interferometer to measure the aforementioned properties over a large temperature range.

Keywords: micro-sized; on-fiber; dilatometer; liquid helium; photoresist