Bonn 2025 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 9: Photonics (3D Print) (joint session Q/K)
Q 9.5: Talk
Monday, March 10, 2025, 18:00–18:15, HS V
3D printed high NA micro-optics for quantum applications — •Pavel Ruchka1, Sara Jakovljevic1, Nam Tran2, Carlos Jimenez3, Simone Luca Portalupi2, Michael Jetter2, Alois Herkommer3, Stephan Reitzenstein4, Sven Höfling5, Caspar Hopfmann6, Peter Michler2, and Harald Giessen1 — 14th Physics Institute and Research Center SCoPE, University of Stuttgart — 2Institut für Halbleiteroptik und Funktionelle Grenzflächen and Research Center SCoPE, University of Stuttgart — 3Institute for Applied Optics and Research Center SCoPE, University of Stuttgart — 4Institute of Solid State Physics, Technische Universität Berlin — 5Technische Physik, University of Würzburg — 6Deutsche Telekom Chair of Communication Networks, TU Dresden
3D-printed micro-optics made with two-photon polymerization have revolutionized fields like imaging, sensing, and illumination. This method allows the creation of complex miniature freeform shapes for mechanical and optical uses with high precision, opening up new possibilities for advanced technology. In this work, we present a novel approach to 3D-printed high numerical aperture (NA) micro-optics on optical fibers, targeting applications such as quantum communication and trapped-atom quantum computing. We fabricate shape-optimized refractive and diffractive lenses with NA values as high as 0.8 and characterize their performance through beam profiling. Additionally, we demonstrate the successful coupling of quantum dots at wavelengths of 780 nm and 1550 nm to corresponding single-mode fibers, enabled by these high-NA 3D-printed micro-optics.
Keywords: Two-photon polymerization; 3D printing; Fiber coupling; Micro-optics; Quantum repeater