Abstract
We have developed a new type of holographic polymer-dispersed liquid crystal(HPDLC)device, alignment-controlled HPDLC device, in which polymerized regions are formed periodically in aligned LC. The alignment-controlled HPDLC device has potential for attaining high reflection efficiency, because of effective use of the refractive-index anisotropy of LC. We have succeeded in operating the device in two modes, vertical operation with an electric field applied vertically to the substrate and in-plane operation with the field applied parallel to the substrate. We also examined the characteristics of light reflected from the device and determined how they are related to the device structure and electrode arrangement.
