Position clamping of optically trapped microscopic non-spherical probes

David B. Phillips, S.H. Simpson, James A. Grieve, Graham M. Gibson, R. Bowman, Miles J. Padgett, M J Miles, David M. Carberry

Research output: Contribution to journalArticlepeer-review

33 Citations (SciVal)


We investigate the degree of control that can be exercised over an optically trapped microscopic non-spherical force probe. By position clamping translational and rotational modes in different ways, we are able to dramatically improve the position resolution of our probe with no reduction in sensitivity. We also demonstrate control over rotational-translational coupling, and exhibit a mechanism whereby the average centre of rotation of the probe can be displaced away from its centre.

Original languageEnglish
Pages (from-to)20622-20627
Number of pages6
JournalOptics Express
Issue number21
Publication statusPublished - 10 Oct 2011

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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