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Proceedings Paper

Influence of weak reflections from dielectric interfaces on properties of optical trap
Author(s): Mojmir Sery; Petr Jakl; Jan Jezek; Alexandr Jonas; Miroslav Liska; Pavel Zemanek
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Paper Abstract

It is studied theoretically and experimentally how a wave reflected from the surface influences the distance of the trapped sphere from the beam waist. The reflected wave interferes with the incident one and they create a standing wave component in the final axial intensity distribution. This component modulates the trapping potential and creates several equilibrium positions for the trapped sphere. When the beam waist approaches the surface, the potential profiles changes and causes jumps of the trapped objects to deeper potential well. We proved that these unwanted jumps of the trapped objects between the neighboring equilibrium positions can be eliminated by proper size of the sphere.

Paper Details

Date Published: 8 July 2003
PDF: 6 pages
Proc. SPIE 5036, Photonics, Devices, and Systems II, (8 July 2003); doi: 10.1117/12.498651
Show Author Affiliations
Mojmir Sery, Brno Univ. of Technology (Czech Republic)
Institute of Scientific Instruments (Czech Republic)
Petr Jakl, Institute of Scientific Instruments (Czech Republic)
Jan Jezek, Institute of Scientific Instruments (Czech Republic)
Alexandr Jonas, Institute of Scientific Instruments (Czech Republic)
Miroslav Liska, Brno Univ. of Technical (Czech Republic)
Pavel Zemanek, Institute of Scientific Instruments (Czech Republic)


Published in SPIE Proceedings Vol. 5036:
Photonics, Devices, and Systems II

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