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Dynamic grating recording in lyotropic ionic smectics of metal alkanoates doped with electrochromic impurities

Authors
Journal
Optical Materials
0925-3467
Publisher
Elsevier
Publication Date
Keywords
  • Nonlinear Optics Of Liquid Crystals
  • Viologen
  • Lyotropic Ionic Smectic
  • Dynamic Holography
  • Photoconversion
Disciplines
  • Chemistry

Abstract

In this work, we investigated nonlinear-optical properties in lyotropic ionic liquid crystals (LILC) of potassium caprilate doped with electrochromic impurities (viologens). It is known that after applying a direct electric field to the LILC-viologen cells colouration of samples is observed. Dynamic grating recording under the action of nanosecond pulse laser radiation was obtained for the coloured samples. We analyzed the origin of the optical nonlinearity in the investigated materials taking into account their electrochemical and electrooptical properties. To explain grating recording in LILC doped with viologens, we proposed the mechanism of photoconversion in viologen molecules.

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