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dc.contributor.advisorKjaergaard, Niels
dc.contributor.authorChisholm, Craig Sterling
dc.date.available2018-08-14T20:40:38Z
dc.date.copyright2018
dc.identifier.citationChisholm, C. S. (2018). Three-Dimensional Manipulation of Ultracold Atoms using Optical Tweezers (Thesis, Master of Science). University of Otago. Retrieved from http://hdl.handle.net/10523/8273en
dc.identifier.urihttp://hdl.handle.net/10523/8273
dc.description.abstractThis thesis describes the design and construction of a three-dimensional optical tweezer system. The three-dimensional aspects were constructed as a modular upgrade to a previously existing one-dimensional system and were characterised using 87Rb with avenues for future research using 40K in mind. The three-dimensional optical tweezer system was used to demonstrate multiple Bose-Einstein condensation in horizontal and vertical planes and gravitationally driven atomic collisions. In order to take advantage of the three-dimensional nature of the optical tweezer system and to build capabilities with Rydberg quantum optics, vortex lattice studies and atom interferometry, a vertical imaging path was added to the existing experiment. Compared with the existing horizontal imaging path, the vertical imaging path has higher spatial resolution. A magnetic levitation scheme was implemented to prevent depth of focus issues due to atoms falling under the influence of gravity during ballistic expansion in time-of-flight. The levitation scheme was also used to increase the maximum time-of-flight using the horizontal imaging path by more than a factor of two. The improved resolution enabled observation of matter wave interference fringes for the first time in the Kjaergaard lab, which is a first step towards the study of quantum vortices.
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.publisherUniversity of Otago
dc.rightsAll items in OUR Archive are provided for private study and research purposes and are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectOptical tweezers
dc.subjectBose-Einstein condensate
dc.subjectUltracold atoms
dc.subjectMatter wave interference
dc.subjectAcousto-optic deflection
dc.titleThree-Dimensional Manipulation of Ultracold Atoms using Optical Tweezers
dc.typeThesis
dc.date.updated2018-08-14T07:33:01Z
dc.language.rfc3066en
thesis.degree.disciplinePhysics
thesis.degree.nameMaster of Science
thesis.degree.grantorUniversity of Otago
thesis.degree.levelMasters
otago.openaccessOpen
otago.evidence.presentYes
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