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

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

2007-06-16

arxiv.org/abs/0706.2427v2

publised in Optics Express, vol. 15, 10615 (2007)

Physics

Optics

6 pages,5 figures,

Scientific paper

10.1364/OE.15.010615

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.

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