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Proceedings Paper

Far field interference measurements of vortex light fields in optical trapping
Author(s): W. M. Lee; A. E. Carruthers; V. Garcés-Chávez; K. Dholakia
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Paper Abstract

The interaction between light and particles in an optical trap provides a tool for physicists to study Brownian motion and dynamics for objects in the micron to nano-sized regime. In this paper, we describe how the forward scattering light field from micro-particles trapped in an optical vortex beam provides a means of studying the helicity and coherence of the trapping beam. Hence, optical trapping may be implemented to study of the relative phase and spatial coherence of two points in trapping light fields with arbitrary wavefronts.

Paper Details

Date Published: 9 February 2007
PDF: 10 pages
Proc. SPIE 6483, Complex Light and Optical Forces, 64830N (9 February 2007); doi: 10.1117/12.702215
Show Author Affiliations
W. M. Lee, Univ. of St. Andrews (United Kingdom)
A. E. Carruthers, Univ. of St. Andrews (United Kingdom)
V. Garcés-Chávez, Univ. of St. Andrews (United Kingdom)
K. Dholakia, Univ. of St. Andrews (United Kingdom)

Published in SPIE Proceedings Vol. 6483:
Complex Light and Optical Forces
David L. Andrews; Enrique J. Galvez; Gerard Nienhuis, Editor(s)

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