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RESEARCH PRODUCT

Ultrahigh-Q Tunable Whispering-Gallery-Mode Microresonator

Arno RauschenbeutelMichael PöllingerF. WarkenDanny O'shea

subject

Materials sciencePhotonOptical fiberGeneral Physics and AstronomyFOS: Physical sciencesPhysics::OpticsPHOTONSOPTICAL MICROCAVITIESlaw.inventionStanding waveResonatorRESONATORSQuality (physics)OpticslawMICROSPHERE LASERPhysicsMode volumeTotal internal reflectionbusiness.industryCHIPCavity quantum electrodynamicsResonanceONE-ATOMChipFIBER TAPERAtom opticsCAVITYOptoelectronicsWhispering-gallery wavebusinessFabry–Pérot interferometerPhysics - OpticsOptics (physics.optics)GENERATION

description

Typical microresonators exhibit a large frequency spacing between resonances and a limited tunability. This impedes their use in a large class of applications which require a resonance of the microcavity to coincide with a predetermined frequency. Here, we experimentally overcome this limitation with highly prolate-shaped whispering-gallery-mode "bottle microresonators" fabricated from standard optical glass fibers. Our resonators combine an ultra-high quality factor of 360 million, a small mode volume, and near lossless fibre coupling, characteristic of whispering-gallery-mode resonators, with a simple and customizable mode structure enabling full tunability.

yearjournalcountryeditionlanguage
2009-07-28Physical Review Letters
10.1103/physrevlett.103.053901https://doi.org/10.1103/physrevlett.103.053901