The nonlinear optical properties of nematic liquid crystal films doped with dyes of fullerene C60 are studied. Nematic liquid crystals were doped with azo-dyes, and tested for their optical storage capabilities. An electro-optical holographic storage grating effect is observed in C60-doped nematic liquid crystal films. The effect is attributed to molecular axis reorientation caused by the combination of an applied DC field and an optically induced DC space charge. The observed nonlinear sensitivity of the films is larger than that of other materials studied.
Optical Holographic Grating Formation in Dye- and Fullerene-Doped Liquid Crystalline System / Simoni, Francesco; Francescangeli, Oriano; Y., Reznikov; S., Slussarenko; I. C., Khoo; M., Wood; B. D., Guenther. - 1:(1996), p. 265. (Intervento presentato al convegno Lasers and Electro-Optics Society Annual Meeting tenutosi a Boston, MA, USA nel 18-19 November 1996) [10.1109/LEOS.1996.565232].
Optical Holographic Grating Formation in Dye- and Fullerene-Doped Liquid Crystalline System
SIMONI, Francesco;FRANCESCANGELI, ORIANO;
1996-01-01
Abstract
The nonlinear optical properties of nematic liquid crystal films doped with dyes of fullerene C60 are studied. Nematic liquid crystals were doped with azo-dyes, and tested for their optical storage capabilities. An electro-optical holographic storage grating effect is observed in C60-doped nematic liquid crystal films. The effect is attributed to molecular axis reorientation caused by the combination of an applied DC field and an optically induced DC space charge. The observed nonlinear sensitivity of the films is larger than that of other materials studied.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
