Title

The Force on a Sphere in a Tightly Focused Laser Beam

Document Type

Thesis

Publication Date

1993

Advisor

Dean Langley

Abstract

An investigation of the trapping force on a sphere in a tightly focused laser beam is carried out using a geometrical optics approximation. This calculation generalizes earlier work by allowing the spheres to be located off the beam axis. Additionally, a fifth-order, instead of zeroth-order, Gaussian approximation is used, and beam polarization is explicitly taken into account. The results suggest an interesting experiment, involving a driven damped harmonic oscilator system, which could be performed to test the validity of the theory. This experiment will be the focus of a future study.

This document is currently not available here.

Share

COinS