Longitudinal Forces on a Spherical Dielectric Particle Exerted by a Truncated Bessel Beam in the Ray Optics Regime

Author(s)

Justino da Silva Arantes, Pedro Paulo ; Ambrosio, Leonardo Andre ; IEEE

• Document type: Journal article
• Source: 2017 SBMO/IEEE MTT-S INTERNATIONAL MICROWAVE AND OPTOELECTRONICS CONFERENCE (IMOC); v. N/A, p. 5-pg., 2017-01-01.

Abstract

A first theoretical and numerical treatment of longitudinal forces in an extended geometrical optics model exerted by a truncated Bessel beam (TBB) on a spherical dielectric particle is presented in this work. To describe the TBB, we use a method for spatial beam shaping to describe truncated beams with simplicity and total analyticity in the paraxial approximation, which utilizes a discrete superposition of scalar Bessel Gauss beams. We present numerical examples of longitudinal forces that a TBB exerts on a scatterer and argue about the limitations of this method. We also briefly discuss about further possible analysis that can be done with TBB and other truncated beams. (AU)

• FAPESP's process: 14/04867-1 - Non-diffracting waves, frozen waves and diffraction-attenuation resistant beams for millimeter and micrometer applications
• Grantee: Leonardo Andre Ambrosio
• Support Opportunities: Regular Research Grants