Bonn 2025 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 48: Poster – Quantum Optics, Technologies, and Optomechanics

Q 48.55: Poster

Wednesday, March 12, 2025, 17:00–19:00, Tent

Miniaturizing optical resonators: Fiber-based Fabry-Perot cavities. — •Usman Adil^1,2, Franziska Haslinger², Michael Förg², Thomas Hümmer², Jonathan Noé², and Manuel Nutz² — ¹LMU München — ²Qlibri GmbH

Microscopic optical resonators have proven to be a versatile tool through their ability to enhance light-matter interaction. Constructing the mirrors on the end-facets of optical fibers offers a compact and tunable solution with intrinsic fiber coupling: Fiber Fabry-Perot Cavities (FFPCs). Successful experimental examples/applications range from non-destructive qubit readout in quantum information processing over sensing applications of gases or liquids to the usage as frequency filter for optical signals. Here, we present the prototype of a readily available FFPC and provide first insights on fiber alignment and positioning. Core parameters like finesse, length, stability and mode matching are analyzed/presented as a function of fiber type, mirror shape and coating properties.

Keywords: Cavity; Fiber; Laser; Resonator