Bonn 2025 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 9: Photonics (3D Print) (joint session Q/K)
Q 9.2: Talk
Monday, March 10, 2025, 17:15–17:30, HS V
Complex light fields produced by 3D-printed computer-generated hologram on fiber — •Zihao Zhang1, Leander Siegle1, Pavel Ruchka1, Daniel Flamm2, and Harald Giessen1 — 14th Physics Institute and Research Center SCoPE, University of Stuttgart, Germany — 2TRUMPF Laser- und Systemtechnik GmbH, Ditzingen, Germany
Non-Gaussian beams are pivotal in numerous scientific and industrial applications, including multi-atom trapping and laser-based material processing. Holographic optical elements can be employed to generate beams with specific intensity distributions. For instance, multiple Gaussian foci can be precisely positioned within three-dimensional space for optical trapping, and the intensity distribution of a Gaussian beam can be modified into various forms for material processing. Despite their utility, many beam-shaping optics are often complex and bulky. Certain applications necessitate solutions that are not only compact and straightforward but also adaptable and capable of rapid adjustments. In this study, we leverage the state-of-the-art technology of two-photon grayscale polymerization (2GL) to create customizable and precise optical elements on a microscale. Here, we present a 3D-printed on-fiber beam shaper, whose design enables the efficient generation of a three-dimensional distribution of 30 foci along a trefoil optical knot using a highly flexible fiber device.
Keywords: Beam-shaping; Two-Photon Polymerization (2PP); Holographic optics