Pure nanodiamonds for levitated optomechanics in vacuum
| Autor: | Soumen Mandal, Oliver A. Williams, Angelo Frangeskou, Gavin W. Morley, Anishur Rahman, Peter Barker, Laia Gines |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
Ultra-high vacuum General Physics and Astronomy Diamond chemistry.chemical_element 02 engineering and technology Trapping engineering.material 021001 nanoscience & nanotechnology 01 natural sciences Nitrogen Optical tweezers chemistry Vacancy defect 0103 physical sciences engineering Atomic physics 010306 general physics 0210 nano-technology Nanodiamond QC Optomechanics |
| Zdroj: | New Journal of Physics. 20:043016 |
| ISSN: | 1367-2630 |
| Popis: | 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 approximately 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/m2 below 5 mbar of pressure. |
| Databáze: | OpenAIRE |
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