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, cilt.73, ss.98-102, 2007 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 73
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1016/j.dyepig.2005.10.020
  • Dergi Adı: DYES AND PIGMENTS
  • Sayfa Sayıları: ss.98-102

Özet

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.