Spontaneous polarization-vector-reorientation photorefractive effect in ferroelectric liquid crystals

Sasaki, Takeo; Kino, Yuji; Shibata, Minoru; Mizusaki, Naoko; Katsuragi, Atsushi; Ishikawa, Yuichi; Yoshimi, Takeshi
June 2001
Applied Physics Letters;6/25/2001, Vol. 78 Issue 26, p4112
Academic Journal
The photorefractive effect of a ferroelectric liquid crystal doped with a photoconductive compound was investigated. The photorefractive effect appeared only at the temperature at which the sample exhibits ferroelectricity. The refractive index grating formation time was measured to be ∼30 ms. In the ferroelectric phase, reorientation of the spontaneous polarization vector was found to be induced by the internal space-charge field. © 2001 American Institute of Physics.


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