Polarization-sensitive photophoresis

Polarization-sensitive photophoresis

We photophoretically trap spherical airborne particles using a single radially or azimuthally polarized laser beam and show that the trapping efficiency is significantly higher for the radial polarization. The demonstrated polarization sensitivity of the photophoretic force, which is caused by polar...

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Veröffentlicht in:Applied physics letters 2012-07, Vol.101 (5), p.51106
Hauptverfasser: Shvedov, Vladlen G., Hnatovsky, Cyril, Eckerskorn, Niko, Rode, Andrei V., Krolikowski, Wieslaw
Format: Artikel
Sprache:eng
Schlagworte:
Absorption
Flexibility
Laser beams
Micromanipulation
Photophoresis
Polarization
Reflection
Trapping
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Zusammenfassung:We photophoretically trap spherical airborne particles using a single radially or azimuthally polarized laser beam and show that the trapping efficiency is significantly higher for the radial polarization. The demonstrated polarization sensitivity of the photophoretic force, which is caused by polarization-dependent reflection from the particles, adds additional flexibility to the optical micromanipulation of light absorbing particles in gaseous media.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4742137