Control of the orientational nonlinearity through photoisomerization in dye doped nematics

E. Benkler, I. Jánossy, M. Kreuzer

Research output: Contribution to journalConference article

13 Citations (Scopus)


Photoinduccd reorientation in azo dye doped liquid crystals (NLCs) is investigated with consideration of photoisomerization. A model that describes photoinduced reorientation in the presence of photoisomerization is verified in different experimental ways, extending previous investigations. We show that both the magnitude and the sign of the optical nonlinearity for an extraordinary beam can be controlled by an ordinarily polarized beam. Such a control of the nonlinearity provides a new functionality for optical switching and optically addressable spatial light modulators.

Original languageEnglish
Pages (from-to)701-711
Number of pages11
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Publication statusPublished - Dec 1 2002
EventProceedings of the IX International Topical Meeting on Optics of Liquid Crystals, OLC 2001 - Sorrento, Italy
Duration: Oct 1 2001Oct 6 2001


  • Dye doped nematics
  • Enhanced optical reorientation
  • Optical switches
  • Photoisomerization
  • Photosensitive materials

ASJC Scopus subject areas

  • Condensed Matter Physics

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