Optical path clearing and enhanced transmission through colloidal suspensions

J. Baumgartl, T. Cizmar, M. Mazilu, V. C. Chan, A. E. Carruthers, B. A. Capron, W. McNeely, E. M. Wright, K. Dholakia

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)

Abstract

We utilize advanced laser fields to clear a path through a dynamic turbid medium, a concept termed "Optical path clearing (OPC)." Particles are evacuated from a volume of the medium using the gradient and/or scattering forces due to an applied laser field with a suitably tailored spatial profile. Our studies encompass both an analytical model and proof-of-principle experiments where paths are cleared in dense bulk colloidal suspensions. Based on our results we suggest that high-performance and high efficiency OPC will be achieved by multiple-step clearing using dynamic laser fields based on Airy or inverted axicon beams. (C) 2010 Optical Society of America

Original languageEnglish
Pages (from-to)17130-17140
Number of pages11
JournalOptics Express
Volume18
Issue number16
DOIs
Publication statusPublished - 2 Aug 2010

Keywords

  • ORBITAL ANGULAR-MOMENTUM
  • AIRY BEAMS
  • MANIPULATION
  • PARTICLES
  • TRANSFORMATION
  • LIGHT

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