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Berlin 2024 – scientific programme

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QI: Fachverband Quanteninformation

QI 6: Trapped Ion and Atom Qubits

QI 6.4: Talk

Monday, March 18, 2024, 16:00–16:15, HFT-FT 131

Fiber cavities for enhancement of comb-assisted microscopy and spectroscopy — •Stephan Fraundienst1,2, Franziska Haslinger1,2, Maerpreet Arora1,2, Tom Schubert1,2, Bingxin Xu3, Thomas Udem1,3, Thomas Hümmer1,2, Nathalie Picqué3, and Michael Förg1,21Fakultät für Physik, Ludwig-Maximilians-Universität Munich, Germany — 2Qlibri GmbH, Munich, Germany — 3Max-Planck-Institut für Quantenoptik, Garching, Germany

Tunable, open, scanning fiber-based microcavities spanning 100 μm and longer offer a compelling platform for light-matter interactions, such as single trapped ion coupling or frequency comb enhanced spectroscopy and microscopy. However, fabricating the concave mirrors at the tip of an optical fiber for long microcavities proves challenging. We provide a method for fabricating fiber mirrors with high finesse and sufficient free spectral range to couple a frequency comb into a microcavity.

Keywords: fiber-based microcavity; frequency comb; microscopy; spectroscopy

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