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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 10 — May. 11, 2009
  • pp: 8407–8416

FDTD approach to optical forces of tightly focused vector beams on metal particles

Jian-Qi Qin, Xi-Lin Wang, Ding Jia, Jing Chen, Ya-Xian Fan, Jianping Ding, and Hui-Tian Wang  »View Author Affiliations

Optics Express, Vol. 17, Issue 10, pp. 8407-8416 (2009)

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We propose an improved FDTD method to calculate the optical forces of tightly focused beams on microscopic metal particles. Comparison study on different kinds of tightly focused beams indicates that trapping efficiency can be altered by adjusting the polarization of the incident field. The results also show the size-dependence of trapping forces exerted on metal particles. Transverse tapping forces produced by different illumination wavelengths are also evaluated. The numeric simulation demonstrates the possibility of trapping moderate-sized metal particles whose radii are comparable to wavelength.

© 2009 Optical Society of America

OCIS Codes
(140.7010) Lasers and laser optics : Laser trapping
(350.4855) Other areas of optics : Optical tweezers or optical manipulation
(290.5825) Scattering : Scattering theory

ToC Category:
Optical Trapping and Manipulation

Original Manuscript: February 6, 2009
Revised Manuscript: March 23, 2009
Manuscript Accepted: May 1, 2009
Published: May 4, 2009

Virtual Issues
Vol. 4, Iss. 7 Virtual Journal for Biomedical Optics

Jian-Qi Qin, Xi-Lin Wang, Ding Jia, Jing Chen, Ya-Xian Fan, Jianping Ding, and Hui-Tian Wang, "FDTD approach to optical forces of tightly focused vector beams on metal particles," Opt. Express 17, 8407-8416 (2009)

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