Observation of thermal feedback on the optical coupling noise of a microsphere attached to a low-spring-constant cantilever

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dc.contributor.author Wu, Yuqiang
dc.contributor.author Ward, Jonathan
dc.contributor.author Nic Chormaic, Síle
dc.date.accessioned 2017-08-22T10:30:37Z
dc.date.available 2017-08-22T10:30:37Z
dc.date.issued 2012
dc.identifier.citation Wu, Y., Ward, J. and Nic Chormaic, S. (2012) 'Observation of thermal feedback on the optical coupling noise of a microsphere attached to a low-spring-constant cantilever', Physical Review A, 85(5), 053820. (8pp). doi: 10.1103/PhysRevA.85.053820 en
dc.identifier.volume 85
dc.identifier.issued 5
dc.identifier.issn 2469-9926
dc.identifier.issn 2469-9934
dc.identifier.uri http://hdl.handle.net/10468/4501
dc.identifier.doi 10.1103/PhysRevA.85.053820
dc.description.abstract A silica microsphere on a low-spring-constant cantilever (pendulum) is fabricated and evanescently coupled to a tapered optical fiber. The motion of the pendulum is detected as variations in the transmitted laser power through the tapered fiber. The optical coupling noise created by the pendulum motion is recorded by taking a fast Fourier transform of the transmitted laser power and the fundamental mechanical mode of the pendulum at 1.16 kHz is observed. The thermal damping and amplification of the coupling noise is investigated and the effect of the thermal feedback on the noise spectrum is examined. The response of the thermo-optical feedback to small transient and driven variations in the taper-pendulum separation for different values of laser detuning is demonstrated. Preliminary results on the optical force between the pendulum and the tapered fiber are also presented. Microspherical pendulums, with low mechanical spring constant, could be used for studying nanoscopic optical and mechanical forces, or optical cooling. en
dc.description.sponsorship Science Foundation Ireland (08/ERA/I1761); Irish Research Council for Science, Engineering and Technology (Embark Initiative) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher American Physical Society en
dc.relation.uri https://journals.aps.org/pra/abstract/10.1103/PhysRevA.85.053820
dc.rights © 2012, American Physical Society en
dc.subject Whispering-gallery modes en
dc.subject Micromechanical oscillator en
dc.subject Microbubble resonator en
dc.subject Cavity en
dc.subject Microresonators en
dc.subject Microcavities en
dc.subject Forces en
dc.title Observation of thermal feedback on the optical coupling noise of a microsphere attached to a low-spring-constant cantilever en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Yuqiang Wu, Tyndall National Institute, University College Cork, Cork, Ireland. +353-21-490-3000 Email: yuqiang.wu@tyndall.ie en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.internal.wokid WOS:000304172100013
dc.contributor.funder Science Foundation Ireland
dc.contributor.funder Irish Research Council for Science, Engineering and Technology
dc.contributor.funder FP7 People: Marie-Curie Actions
dc.description.status Peer reviewed en
dc.identifier.journaltitle Physical Review A en
dc.internal.IRISemailaddress yuqiang.wu@tyndall.ie en
dc.identifier.articleid 53820
dc.relation.project info:eu-repo/grantAgreement/EC/FP7::SP3::PEOPLE/229520/EU/IRCSET International Mobility Fellowships in Science Engineering and Technology: co-funded by Marie Curie Actions/INSPIRE


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