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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 22, Iss. 11 — Jun. 1, 1997
  • pp: 816–818

Observation of a single-beam gradient-force optical trap for dielectric particles in air

Ryota Omori, Tamiki Kobayashi, and Atsuyuki Suzuki  »View Author Affiliations


Optics Letters, Vol. 22, Issue 11, pp. 816-818 (1997)
http://dx.doi.org/10.1364/OL.22.000816


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Abstract

A single-beam gradient-force optical trap for dielectric particles, which relies solely on the radiation pressure force of a TEM00-mode laser light, is demonstrated in air for what is believed to be the first time. It was observed that micrometer-sized glass spheres with a refractive index of n=1.45 remained trapped in the focus region for more than 30 min, and we could transfer them three dimensionally by moving the beam focus and the microscope stage. A laser power of ~40 mW was sufficient to trap a 5- µm -diameter glass sphere. The present method has several distinct advantages over the conventional optical levitation method.

© 1997 Optical Society ofAmerica

Citation
Ryota Omori, Tamiki Kobayashi, and Atsuyuki Suzuki, "Observation of a single-beam gradient-force optical trap for dielectric particles in air," Opt. Lett. 22, 816-818 (1997)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-22-11-816

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