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Proceedings Article

Comparison of the single beam and the standing wave trap stiffnesses

[+] Author Affiliations
Petr Jakl

Institute of Scientific Instruments and Brno Univ. of Technology (Czech Republic)

Alexandr Jonas, Pavel Zemanek

Institute of Scientific Instruments (Czech Republic)

Ernst-Ludwig Florin

European Molecular Biology Lab. (Germany)

Proc. SPIE 4356, 12th Czech-Slovak-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 347 (March 7, 2001); doi:10.1117/12.417851
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From Conference Volume 4356

  • 12th Czech-Slovak-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics
  • Velke Losiny, Czech Republic | September 12, 2000

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.

© (2001) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Petr Jakl ; Alexandr Jonas ; Ernst-Ludwig Florin and Pavel Zemanek
"Comparison of the single beam and the standing wave trap stiffnesses", Proc. SPIE 4356, 12th Czech-Slovak-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 347 (March 7, 2001); doi:10.1117/12.417851; http://dx.doi.org/10.1117/12.417851


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