Publication result detail

Beahviour of an optically trapped probe approaching a dielectric interface

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

Original Title

Beahviour of an optically trapped probe approaching a dielectric interface

English Title

Beahviour of an optically trapped probe approaching a dielectric interface

Type

Peer-reviewed article not indexed in WoS or Scopus

Original Abstract

The way in which reflection of the trapping beam from a dielectric interface influences the distance of the trapped sphere from the beam waist is studied theoretically and experimentally. The reflected wave interferes with the incident wave and they create a standing-wave component in the total axial intensity distribution. This component then modulates the trapping potential and creates several possible equilibrium positions for the trapped sphere. When the beam waist approaches the surface, the potential profile changes, which consequently causes jumps of the trapped probe from its current location to a deeper potential well. We suggested theoretically and proved experimentally that the magnitude of these unwanted jumps between the neighbouring equilibrium positions can be decreased by a suitable size of the sphere.

English abstract

The way in which reflection of the trapping beam from a dielectric interface influences the distance of the trapped sphere from the beam waist is studied theoretically and experimentally. The reflected wave interferes with the incident wave and they create a standing-wave component in the total axial intensity distribution. This component then modulates the trapping potential and creates several possible equilibrium positions for the trapped sphere. When the beam waist approaches the surface, the potential profile changes, which consequently causes jumps of the trapped probe from its current location to a deeper potential well. We suggested theoretically and proved experimentally that the magnitude of these unwanted jumps between the neighbouring equilibrium positions can be decreased by a suitable size of the sphere.

Keywords

GAUSSIAN STANDING-WAVE, RADIATION PRESSURE, BEAM, PARTICLES, FORCES, SCATTERING, TWEEZERS, LASER, LIGHT

Key words in English

GAUSSIAN STANDING-WAVE, RADIATION PRESSURE, BEAM, PARTICLES, FORCES, SCATTERING, TWEEZERS, LASER, LIGHT

Authors

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

Released

01.06.2003

ISBN

0950-0340

Periodical

JOURNAL OF MODERN OPTICS

Volume

50

Number

10

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1615

Pages count

10

BibTex

@article{BUT42036,
  author="Petr {Jákl} and Mojmír {Šerý} and Jan {Ježek} and Alexandr {Jonáš} and Miroslav {Liška} and Pavel {Zemánek}",
  title="Beahviour of an optically trapped probe approaching a dielectric interface",
  journal="JOURNAL OF MODERN OPTICS",
  year="2003",
  volume="50",
  number="10",
  pages="10",
  issn="0950-0340"
}