Diffraction efficiency enhancement caused by employing liquid crystal phthalonitrile derivative in nematic liquid crystals


Koysal O., Okutan M. , San S. E. , Durmus M., Ecevıt F. N. , Ahsen V.

DYES AND PIGMENTS, vol.73, pp.98-102, 2007 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 73
  • Publication Date: 2007
  • Doi Number: 10.1016/j.dyepig.2005.10.020
  • Title of Journal : DYES AND PIGMENTS
  • Page Numbers: pp.98-102

Abstract

The change of refractive index, originated by photoinduced molecular reorientation, brings about a significant diffraction capability in E7 coded nematic liquid crystal system doped by 2,3-dicyano-1,4-di[3,4,5-tri(dodecyloxy)phenylcarbonyloxy]benzene (DCDPB) which is called as liquid crystal phthalonitrile derivative. Results of a grating diffraction experiment are reported for the constructed sample. The accessible diffraction efficiency, eta, is roughly of the order of 10% under the optimum conditions and analysed results propose this novel system to be appropriate and promising for the excitation wavelength of a 632.8 nm He-Ne laser. (c) 2005 Elsevier Ltd. All rights reserved.