Enhanced two-beam coupling in colloids of ferroelectric nanoparticles in liquid crystals
JOSA B, Vol. 24, Issue 7, pp. 1512-1516 (2007)
http://dx.doi.org/10.1364/JOSAB.24.001512
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Abstract
We report on the first, to the best of our knowledge, studies of photorefraction in nematic liquid crystal (LC) doped with nanoferroelectric particles. We found the strong enhancement of two-beam coupling in the colloid of ferroelectric nanoparticles in LC. The effect originated from an increased birefringence of the colloid and a stronger LC reorientation torque. Our measurements allowed us to suggest that increased birefringence is caused by the contribution of polarizability anisotropy of the ferroelectric particles. Stronger reorientation torque is caused by the permanent dipole moment of the particles contributing to the dielectric anisotropy of the colloid
© 2007 Optical Society of America
OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(160.3710) Materials : Liquid crystals
(190.5330) Nonlinear optics : Photorefractive optics
ToC Category:
Materials
History
Original Manuscript: December 8, 2006
Revised Manuscript: February 15, 2007
Manuscript Accepted: March 1, 2007
Published: June 15, 2007
Citation
Oleksandr Buchnev, Andriy Dyadyusha, Malgosia Kaczmarek, Victor Reshetnyak, and Yuriy Reznikov, "Enhanced two-beam coupling in colloids of ferroelectric nanoparticles in liquid crystals," J. Opt. Soc. Am. B 24, 1512-1516 (2007)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-24-7-1512
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