A polymer-wall-confined transmissive switchable liquid crystal grating is proposed and investigated by two-dimensional finite-difference time-domain optical calculation and liquid-crystal-director calculation, to our knowledge for the first time. The results show how to obtain optimized conditions for high diffraction efficiency by adjusting the liquid crystal parameters, grating geometric structure, and applied voltages. The light propagation direction and efficiency can be accurately calculated and visualized concurrently.
© 2004 Optical Society of America
(050.1970) Diffraction and gratings : Diffractive optics
(160.3710) Materials : Liquid crystals
(230.1950) Optical devices : Diffraction gratings
(230.2090) Optical devices : Electro-optical devices
(230.3720) Optical devices : Liquid-crystal devices
Bin Wang, Xinghua Wang, and Philip J. Bos, "Finite-difference time-domain calculations of a liquid-crystal-based switchable Bragg grating," J. Opt. Soc. Am. A 21, 1066-1072 (2004)