Bonn 2025 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 48: Poster – Quantum Optics, Technologies, and Optomechanics
Q 48.36: Poster
Wednesday, March 12, 2025, 17:00–19:00, Tent
Manufacture high-finesse fiber Fabry-Perot cavities for quantum information processing — •Johannes Berger1, Matthias Michalek1, Constantin Grave1, Isabelle Safa1, Marvin Holten1, and Julian Leonard1,2 — 1TU Wien, Atominstitut, Vienna Center for Quantum Science and Technology (VCQ), Vienna, Austria — 2Institute of Science and Technology Austria (ISTA), Am Campus 1, 3400 Klosterneuburg, Austria
Fiber Fabry-Perot cavities (FFPCs) are integral to numerous scientific and technological applications, such as cavity quantum electrodynamics experiments, tunable optical filters, cavity-based spectroscopy of gases and many more. Our team has established an advanced, automated fabrication system for creating curved mirrors on the endfacets of optical fibers. The curvature is precisely formed with a CO2 laser, while the reflective coating is applied externally. By using an acousto-optic modulator (AOM), the beam pulse can be manipulated as required to improve the desired fiber ablation. In our setup, white light interferometry is incorporated to monitor and measure the created profile throughout the production process, allowing for iterative optimization. This approach aims to produce high finesse cavities, which are essential for many quantum simulation setups like the currently build setup of our group, that uses an tweezer-loaded array of neutral atoms inside a FFPC.
Keywords: High finesse; Fiber Fabry-Perot cavity; White light interferometry; Acousto-optic modulator