Title :
Enhancement of light induced re-orientation in dye-doped nematic liquid crystals
Author :
Petrosyan, A. ; Residori, S.
Author_Institution :
Yerevan State Univ., Armenia
Abstract :
Summary form only given. We have studied the influence of liquid crystal-ITO coated glass interface to the photorefractive effect. All measurements were done in 10 /spl mu/m homeotropically aligned pentylcyanobiphenyl (5 CB) cells doped with 0.3 wt% Methyl Red (MR). In order to get homeotropic orientation in the cell, we have used different types of alignment agents. With all homeotropic alignment agents we see photovoltaic effect, but only in the cells treated with hexadecyl trimethyl ammonium bromide (HTAB), we observe extremely large orientation effect which strongly depends on the writing light polarization.
Keywords :
birefringence; dyes; liquid crystals; optical films; photorefractive materials; photovoltaic effects; 10 micron; HTAB; ITO; InSnO; Methyl Red; alignment agents; hexadecyl trimethyl ammonium bromide; homeotropic alignment agents; homeotropic orientation; homeotropically aligned pentylcyanobiphenyl cells; large orientation effect; liquid crystal-ITO coated glass interface; photorefractive effect; photovoltaic effect; writing light polarization; Atomic force microscopy; Diffraction; Holography; Liquid crystal devices; Liquid crystals; Optical materials; Optical polarization; Photorefractive effect; Photorefractive materials; Writing;
Conference_Titel :
Lasers and Electro-Optics, 2002. CLEO '02. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Long Beach, CA, USA
Print_ISBN :
1-55752-706-7
DOI :
10.1109/CLEO.2002.1033629
