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Proceedings Paper

Comparison of the single beam and the standing wave trap stiffnesses
Author(s): Petr Jakl; Alexandr Jonas; Ernst-Ludwig Florin; Pavel Zemanek
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Paper Abstract

The harmonic nature of the potential well for the small displacement of the probe from its equilibrium position allows us to classify the trap characteristics with three independent spring constants. These can be obtained from the spectral analysis of the thermal noise of the particle position. Probe position in all three dimensions is monitored with a single quadrant photodiode placed in the back focal plane of the microscope condenser. Experimental results of the trap stiffness measurements are presented.

Paper Details

Date Published: 7 March 2001
PDF: 6 pages
Proc. SPIE 4356, 12th Czech-Slovak-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, (7 March 2001); doi: 10.1117/12.417851
Show Author Affiliations
Petr Jakl, Institute of Scientific Instruments and Brno Univ. of Technology (Czech Republic)
Alexandr Jonas, Institute of Scientific Instruments (Czech Republic)
Ernst-Ludwig Florin, European Molecular Biology Lab. (Germany)
Pavel Zemanek, Institute of Scientific Instruments (Czech Republic)


Published in SPIE Proceedings Vol. 4356:
12th Czech-Slovak-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics
Jan Perina; Miroslav Hrabovsky; Jaromir Krepelka, Editor(s)

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