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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 10 — May. 17, 2004
  • pp: 2220–2230

Rigorous time domain simulation of momentum transfer between light and microscopic particles in optical trapping

Dianwen Zhang, X.-C. Yuan, S. C. Tjin, and S. Krishnan  »View Author Affiliations


Optics Express, Vol. 12, Issue 10, pp. 2220-2230 (2004)
http://dx.doi.org/10.1364/OPEX.12.002220


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Abstract

Laser light can exert forces on matter by exchanging momentum in form of radiation pressure and refraction. Although these forces are small, they are sufficient to trap and manipulate microscopic particles [Phys. Rev. Lett. 24, 156 (1970)]. In this paper, we study the optical trapping phenomena by using computer simulation to show a detailed account of the process of momentum exchange between a focused light and a microscopic particle in an optical trapping by use of the finite difference time domain method. This approach provides a practical routine to predict the magnitude of the exchanged momentum, track the particle in a trapping process, and determine a trapping point, where dynamic equilibrium happens. Here we also theoretically describe the transfer procedure of orbital angular momentum from a focused optical vortex to the particle.

© 2004 Optical Society of America

OCIS Codes
(020.7010) Atomic and molecular physics : Laser trapping
(140.7010) Lasers and laser optics : Laser trapping

ToC Category:
Research Papers

History
Original Manuscript: March 22, 2004
Revised Manuscript: May 4, 2004
Published: May 17, 2004

Citation
Dianwen Zhang, X. Yuan, S. Tjin, and S. Krishnan, "Rigorous time domain simulation of momentum transfer between light and microscopic particles in optical trapping," Opt. Express 12, 2220-2230 (2004)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-12-10-2220


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References

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Supplementary Material


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