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Pure nanodiamonds for levitated optomechanics in vacuum

Frangeskou, Angelo C., Rahman, Anishur A. T. M., Gines, Laia ORCID: https://orcid.org/0000-0001-9980-054X, Mandal, Soumen ORCID: https://orcid.org/0000-0001-8912-1439, Williams, Oliver A. ORCID: https://orcid.org/0000-0002-7210-3004, Barker, Peter F. and Morley, Gavin 2018. Pure nanodiamonds for levitated optomechanics in vacuum. New Journal of Physics 20 , 043016. 10.1088/1367-2630/aab700

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Abstract

Optical trapping at high vacuum of a nanodiamond containing a nitrogen vacancy centre would provide a test bed for several new phenomena in fundamental physics. However, the nanodiamonds used so far have absorbed too much of the trapping light, heating them to destruction (above 800 K) except at pressures above ~10 mbar where air molecules dissipate the excess heat. Here we show that milling diamond of 1000 times greater purity creates nanodiamonds that do not heat up even when the optical intensity is raised above 700 GW m−2 below 5 mbar of pressure.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: Institute of Physics (IoP) and Deutsche Physikalische Gesellschaft
ISSN: 1367-2630
Date of First Compliant Deposit: 6 April 2018
Date of Acceptance: 15 March 2018
Last Modified: 04 May 2023 19:57
URI: https://orca.cardiff.ac.uk/id/eprint/110508

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