Spatial light modulators with super twisted nematic liquid crystals

Abstract

By application of super twisted nematic liquid crystals to spatial light modulators, readout light can be modulated sufficiently even if the photoconductive layer is as thin as 1 μm. This is in contrast to the case of conventional spatial light modulators, which require a thick photoconductive layer (>10 μm). Also, the sensitivity is greatly increased (2 μW/cm2 at the applied sinusoidal frequency of 50 Hz).