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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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.
|Glasgow Author(s) Enlighten ID:||Padgett, Professor 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.|