【摘要】 <正> 实时相干光信息处理及非相干图象投影需要发展二维空间光调制器,目前正在研究的光阀结构是PROM、液晶光阀、光KDP、热塑光调制器及最新的微通道空间光调制器等。更多还原

【Abstract】 A new liquid crystal light valve （LCLV） using monocrystalline Bi₁₂SiO₂₀ （BSO） of effective surface 25×25mm², thickness 0.3mm as the photoconductive material is presented. The device operates at room temperature with a low AC drive voltage （10V at 50Hz） under twisted nematic field effect in the transmission mode. A BSO LCLV with a 10μm liquid crystal thickness shows a 10 lpmm^-1 spatial resolution, the image contrast ratio （incoherent light projection）is 26: Ⅰ at writing energy 400μw. Typical rise and decay time is 30 ms.更多还原