Title :
Nonlinear electro-optical holographic storage effects in fullerene C60-doped nematic liquid crystal films
Author :
Khoo, I.C. ; Li, H. ; Liang, Y. ; Wood, M. ; Yarnell, B. ; Wang, K.
Author_Institution :
Dept. of Electr. Eng., Pennsylvania State Univ., University Park, PA, USA
Abstract :
There have been intense research interests in nonlinear optical materials capable of recording permanent holographic planar or volume gratings. In this paper, we present the first observation, to our knowledge, of electro-optical holographic storage grating effects in C 60-doped nematic liquid crystal films. The effect is attributed to molecular axis reorientation caused by the combination of an applied dc field and the optically induced dc space charge field. To generate such reorientational effect, the applied dc field strength needed is on the order of 100 V/cm. This corresponds to a “battery-size” voltage of 1 Volt in typical films with thickness around 100 μm
Keywords :
electro-optical effects; fullerenes; holographic gratings; holographic storage; nematic liquid crystals; nonlinear optics; optical films; 1 V; 100 mum; C60; DC field; electro-optical holographic storage; fullerene-doped nematic liquid crystal film; molecular axis reorientation; nonlinear optical material; planar grating; space charge; volume grating; DC generators; Gratings; Holographic optical components; Holography; Liquid crystals; Nonlinear optics; Optical films; Optical materials; Optical recording; Space charge;
Conference_Titel :
Lasers and Electro-Optics Society Annual Meeting, 1995. 8th Annual Meeting Conference Proceedings, Volume 1., IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-2450-1
DOI :
10.1109/LEOS.1995.484823
