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Proceedings Paper

How the size of a particle approaching dielectric interface influences its behavior
Author(s): Petr Jakl; Mojmir Sery; Jan Jezek; Pavel Zemanek
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Paper Abstract

The influence of size of the trapped object on its position near the dielectric interface is studied experimentally. The trapping beam is reflected on a surface and creates weak standing wave component in resulting field distribution. This component causes unwanted jumps of the trapped particle, when the beam waist moves axially in the surface vicinity. Particles of different sizes are more and less influenced by the standing wave, respectively. The position of the trapped particle is measured with quadrant photodiode and photomultiplier tube at the same time.

Paper Details

Date Published: 18 October 2004
PDF: 7 pages
Proc. SPIE 5514, Optical Trapping and Optical Micromanipulation, (18 October 2004); doi: 10.1117/12.557189
Show Author Affiliations
Petr Jakl, Institute of Scientific Instruments (Czech Republic)
Mojmir Sery, Institute of Scientific Instruments (Czech Republic)
Jan Jezek, Institute of Scientific Instruments (Czech Republic)
Pavel Zemanek, Institute of Scientific Instruments (Czech Republic)

Published in SPIE Proceedings Vol. 5514:
Optical Trapping and Optical Micromanipulation
Kishan Dholakia; Gabriel C. Spalding, Editor(s)

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