Far field interference measurements of vortex light fields in optical trapping

W. M. Lee, A. E. Carruthers, V. Garcés-Chávez, K. Dholakia

Research output: Chapter in Book/Report/Conference proceedingConference contribution


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.

Original languageEnglish
Title of host publicationComplex Light and Optical Forces
Publication statusPublished - 2007
EventComplex Light and Optical Forces - San Jose, CA, United States
Duration: 2007 Jan 242007 Jan 25

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferenceComplex Light and Optical Forces
Country/TerritoryUnited States
CitySan Jose, CA

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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