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Optical Tweezers With Increased Axial Trapping Efficiency

Simpson, N., Mcgloin, D., Dholakia, K., Allen, L., and Padgett, M. (1998) Optical Tweezers With Increased Axial Trapping Efficiency. Journal of Modern Optics, 45 (9). pp. 1943-1949. ISSN 0950-0340 (doi:10.1080/09500349808231712)

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Abstract

We demonstrate that the axial trapping efficiency in optical tweezers is improved by using a Laguerre-Gaussian laser mode as the trapping beam. For a wide range of particle sizes and sample cell depths, the laser power required with an l = 3 Laguerre-Gaussian mode is reduced by a factor of two compared with that of the fundamental mode. This is important for biological applications where a reduction in the laser power lessens the risk of damage to living samples.

Item Type:Article
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Padgett, Prof Miles
Authors: Simpson, N., Mcgloin, D., Dholakia, K., Allen, L., and Padgett, M.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of Modern Optics
Journal Abbr.:J. Mod. Opt.
ISSN:0950-0340

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