Phase conjugation and four-wave mixing in a colloidal medium

C. López-Mariscal, J. C. Gutiérrez-Vega, D. McGloin, K. Dholakia

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


We demonstrate phase conjugation by means of degenerate four-wave mixing from a colloidal crystal. The nonlinear medium is provided by a periodic spatial refractive index grating created in a colloidal suspension of dielectric microparticles trapped in the intensity distribution of two nearly copropagating interfering laser beams. Phase conjugation is achieved for a probe beam carrying orbital angular momentum as evidenced by the inversion of the topological charge of a phase singularity within the beam. The efficiency and nonlinear parameters of the colloidal crystal as well as its lattice properties are measured and compared to theoretical predictions and previous experimental work.

Original languageEnglish
Title of host publicationOptical Trapping and Optical Micromanipulation III
Publication statusPublished - 2006
EventOptical Trapping and Optical Micromanipulation III - San Diego, CA, United States
Duration: 2006 Aug 132006 Aug 17

Publication series

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


ConferenceOptical Trapping and Optical Micromanipulation III
Country/TerritoryUnited States
CitySan Diego, 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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