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Q: Fachverband Quantenoptik und Photonik

Q 55: Poster III

Q 55.47: Poster

Thursday, March 5, 2009, 16:30–19:00, VMP 8 Foyer

Photonic applications and experimental results on ultra-high Q bottle microresonators — •Andreas Vogler, Michael Pöllinger, Danny O’Shea, and Arno Rauschenbeutel — Abteilung QUANTUM, Institut für Physik, Johannes Gutenberg-Universität, 55099 Mainz

We have developed a novel type of whispering gallery microresonator that confines light by a mechanism similar to the confinement of charged particles in a magnetic bottle. The monolithic resonator, shaped like a highly prolate ellipsoid, is directly structured on a standard optical glass-fiber. Unlike other whispering gallery mode resonators, e.g. microspheres, the light is not just confined in a narrow ring close to the surface in the equatorial plane but allows a more complex mode structure. The bottle resonator concept yields ultra-high intrinsic quality factors Q≈3.6· 10⁸ in combination with an unique tunability, which stems from it’s Fabry-Perot-like mode structure along the fiber-axis.

We present experimental results on coupling of bottle modes among each other in one as well as in two macroscopically separated bottle resonators. Furthermore, we examine the coupling of bottle modes with the modes of a single mode fiber ring resonator. Finally, we present first results towards the use of bottle microresonators as all-optical fiber-based four-port devices for ultralow-power photonics applications like, e.g., all-optical switching.

Financial support by the DFG, the Volkswagen Foundation, and the ESF is gratefully acknowledged.