Publication detail

Theoretical comparsion of optical traps created by standing wave and single beam

ZEMÁNEK, P., JONÁŠ, A., JÁKL, P., JEŽEK, J., ŠERÝ, M., LIŠKA, M.

Original Title

Theoretical comparsion of optical traps created by standing wave and single beam

Type

journal article - other

Language

English

Original Abstract

We used generalised Lorenz-Mie scattering theory (GLMT) to compare submicron-sized particle optical trapping in a single focused beam and a standing wave. We focus especially on the study of maximal axial trapping force, minimal laser power necessary for confinement, axial trap position, and axial trap stiffness in dependency on trapped sphere radius, refractive index, and Gaussian beam waist size. In the single beam trap (SBT), the range of refractive indices which enable stable trapping depends strongly on the beam waist size (it grows with decreasing waist). On the contrary to the SBT, there are certain sphere sizes (non-trapping radii) that disable sphere confinement in standing wave trap (SWT) for arbitrary value of refractive index. For other sphere radii we show that the SWT enables confinement of high refractive index particle in wider laser beams and provides axial trap stiffness and maximal axial trapping force at least by two orders and one order bigger than in SBT, respectively. (C) 2003 Elsevier Science B.V. All rights reserved.

Keywords

single beam trap, optical trapping, optical tweezers, standing wave, Mie scattering, Gaussian laser beam, FOCUSED LASER-BEAM, LORENZ-MIE THEORY, GAUSSIAN-BEAM, DIELECTRIC PARTICLES, MANIPULATION, FORCE, MICROPARTICLES, SCATTERING, TWEEZERS, FIELDS

Authors

ZEMÁNEK, P., JONÁŠ, A., JÁKL, P., JEŽEK, J., ŠERÝ, M., LIŠKA, M.

Released

15. 5. 2003

ISBN

0030-4018

Periodical

Optics Communications

Year of study

220

Number

4-6

State

Kingdom of the Netherlands

Pages from

401

Pages to

412

Pages count

12

BibTex

@article{BUT42035,
  author="Pavel {Zemánek} and Alexandr {Jonáš} and Petr {Jákl} and Jan {Ježek} and Mojmír {Šerý} and Miroslav {Liška}",
  title="Theoretical comparsion of optical traps created by standing wave and single beam",
  journal="Optics Communications",
  year="2003",
  volume="220",
  number="4-6",
  pages="12",
  issn="0030-4018"
}