Extremely nonlinear photosensitive nematic liquid crystal film

I. C. Khoo, M. Y. Shih, M. V. Wood, P. H. Chen

Research output: Contribution to journalConference articlepeer-review

8 Scopus citations


Optically induced nematic liquid crystal (NLC) axis reorientations result in extraordinarily large nonlinear refractive index changes. We discuss the origins of these nonlinearities, and recently, obtained results of experimental studies of photovoltage generation, dynamic grating diffraction, and image conversion using dye-doped NLC films in all-optical configurations are presented. These processes are characterized by unprecedented low threshold laser powers. For example, we have demonstrated incoherent-coherent image conversion with laser intensity on the order of 70 microWatts/cm2.

Original languageEnglish (US)
Pages (from-to)145-150
Number of pages6
JournalSynthetic Metals
Issue number1
StatePublished - Nov 1 2000
EventProccedings of the European Materials Research Society 1999 Spring Meeting, Symposium N: Molecular Photonics at the Interface of Physics, Chemistry and Biology - Strasbourg, France
Duration: Jun 1 1999Jun 4 1999

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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