Experimental measurement and analysis of the optical trapping force acting on a yeast cell with a lensed optical fiber probe

Based on an optical trapping system with a single-lensed fiber probe inserted at an angle, the sub-picoNewton trapping force acting on a yeast cell as a function of the displacement is measured experimentally by the static and dynamic methods, respectively, whose measurement processes are presented...

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Bibliographic Details
Published in:Optics and laser technology 2007-04, Vol.39 (3), p.475-480
Main Authors: Hu, Zhaohui, Wang, Jia, Liang, Jinwen
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Mechanical effects of light on atoms, molecules, electrons, and ions
Optical force
Optical manipulation
Optical trapping
Optics
Physics
Quantum optics
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Summary:Based on an optical trapping system with a single-lensed fiber probe inserted at an angle, the sub-picoNewton trapping force acting on a yeast cell as a function of the displacement is measured experimentally by the static and dynamic methods, respectively, whose measurement processes are presented in detail. The measured maximum trapping efficiency is 0.07 in our experiment, which is an order of magnitude lower than that of the optical tweezers. The characteristics of the trapping force in the various horizontal directions are discussed. Finally, the analysis of the measurement error shows the factors and their magnitude which cause error, and offers a way to reduce the error in future.
ISSN:0030-3992
1879-2545
DOI:10.1016/j.optlastec.2005.11.010