title: Structure and scaling of helical modes of light.
abstract: Modes of light that contain topological defects such as screw dislocations can be focused into optical traps with interesting and useful properties. The way in which the intensity distribution within helical modes of light varies with topological charge is discussed, and new scaling predictions for their radial profiles that are consistent with experimental observations are introduced.
authors.affiliation: The James Franck Institute and Department of Physics, The University of Chicago, Chicago, Illinois 60637, USA.
authors.forename: Steven
authors.initials: S
authors.lastname: Sundbeck
authors.forename: Ilya
authors.initials: I
authors.lastname: Gruzberg
authors.forename: David G
authors.initials: DG
authors.lastname: Grier