Bonn 2025 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 49: Poster – Photonics, Lasers, and Applications
Q 49.21: Poster
Mittwoch, 12. März 2025, 17:00–19:00, Tent
Tunable Focusing Metalens on a Fiber with Two Cores — •Jun Sun1, Malte Plidschun1, Jisoo Kim1, Torsten Wieduwilt1, and Markus A. Schmidt1,2,3 — 1Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745 Jena, Germany — 2Otto Schott Institute of Material Research, Friedrich Schiller University Jena, Fraunhoferstrasse 6, 07743 Jena, Germany — 3Abbe Center of Photonics and Faculty of Physics, Friedrich-Schiller-University Jena, Max-Wien-Platz 1, 07743 Jena, Germany
We propose a novel approach for fast, power-controlled spatial focus shape modulation through an all-fiber-integrated system utilizing a 3D nanoprinted intensity-sensitive hologram. This hologram enables dynamic control of focus geometric ellipticity by modulating the power distribution between the modes of a dual-core fiber. The resulting power-dependent interference pattern alters the hologram's intensity distribution, achieving precise focus shape control. Our study encompasses computational design, advanced 3D nanoprinting, and fiber fabrication, demonstrating the feasibility of this monolithic solution. Experiments and simulations validate its high-speed modulation capability, with promising applications in optical manipulation, laser micromachining, telecommunications, etc.
Keywords: tunable focused light; 3D nanoprinting; phase-only hologram