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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 17 — Aug. 20, 2007
  • pp: 10615–10621

Dynamic radiation force of a pulsed Gaussian beam acting on a Rayleigh dielectric sphere

Li-Gang Wang and Cheng-Liang Zhao  »View Author Affiliations

Optics Express, Vol. 15, Issue 17, pp. 10615-10621 (2007)

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We investigate the dynamic evolution of the radiation forces produced by the pulsed Gaussian beams acting on a Rayleigh dielectric sphere. We derive the analytical expressions for the scattering force and all components of the ponderomotive force induced by the pulsed Gaussian beams. Our analysis shows that the radiation force, for both the transverse and longitudinal components, can be greatly enhanced as the pulse duration decreases. It is further found that for the pulse with long pulse duration, it can be used for the stable trapping and manipulating the particle, while for the pulse with short pulse duration it may be used for guiding and moving the small dielectric particle. Finally we discuss the stability conditions of the effective manipulating the particle by the pulsed beam.

© 2007 Optical Society of America

OCIS Codes
(140.7010) Lasers and laser optics : Laser trapping
(170.4520) Medical optics and biotechnology : Optical confinement and manipulation
(320.5550) Ultrafast optics : Pulses

ToC Category:

Original Manuscript: June 7, 2007
Revised Manuscript: July 30, 2007
Manuscript Accepted: August 3, 2007
Published: August 7, 2007

Virtual Issues
Vol. 2, Iss. 9 Virtual Journal for Biomedical Optics

Li-Gang Wang and Cheng-Liang Zhao, "Dynamic Radiation Force of a Pulsed Gaussian Beam Acting on Rayleigh Dielectric Sphere," Opt. Express 15, 10615-10621 (2007)

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