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QI: Fachverband Quanteninformation

QI 6: Trapped Ion and Atom Qubits

QI 6.4: Vortrag

Montag, 18. März 2024, 16:00–16:15, HFT-FT 131

Fiber cavities for enhancement of comb-assisted microscopy and spectroscopy — •Stephan Fraundienst^1,2, Franziska Haslinger^1,2, Maerpreet Arora^1,2, Tom Schubert^1,2, Bingxin Xu³, Thomas Udem^1,3, Thomas Hümmer^1,2, Nathalie Picqué³, and Michael Förg^1,2 — ¹Fakultät 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