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

Abstract

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.

arXiv comment6 pages,5 figures,

References in corpus (1)

• Effect of Coherence on Radiation Forces acting on a Rayleigh Dielectric Sphere

Cited by in corpus (4)

• Femtosecond laser-assisted selective holding with ultra-low power for direct manipulation of biological specimens
• Comparative study of the real-time optical trapping in the Rayleigh regime for continuous and pulsed lasers
• Longitudinal Radiation Force of Laser Pulses and Optics of Moving Particles
• Precise position- and angular-controllable optical trapping and manipulation via a single vortex-pair beam