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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 27 — Sep. 20, 1998
  • pp: 6386–6394

Axial Force Acting on a Dielectric Sphere in a Focused Laser Beam

Shojiro Nemoto and Hiroyoshi Togo  »View Author Affiliations


Applied Optics, Vol. 37, Issue 27, pp. 6386-6394 (1998)
http://dx.doi.org/10.1364/AO.37.006386


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Abstract

We present the detailed behavior of the axial force acting on a dielectric sphere exerted by the optical pressure of a focused Gaussian laser beam. Comparison is made between the numerical results and those calculated from the radiation pressure cross section. There is also a discussion as to whether the expressions for the axial force given in this paper are consistent with the previously reported experimental results. Moreover, a simple experimental method to measure the axial force on a polystyrene sphere suspended in water is demonstrated, and fairly good agreement between theoretical and experimental results was obtained.

© 1998 Optical Society of America

OCIS Codes
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.7010) Lasers and laser optics : Laser trapping
(350.4990) Other areas of optics : Particles

Citation
Shojiro Nemoto and Hiroyoshi Togo, "Axial Force Acting on a Dielectric Sphere in a Focused Laser Beam," Appl. Opt. 37, 6386-6394 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-27-6386


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