新型聚合物分散液晶光栅的研制及其电光特性研究

The Manufacture of a Novel PDLC Grating and Its Electro-optical Properties

采用激光全息方法诱导预聚物和液晶混合物相分离、形成光栅器件的新方法。分析了制作机理并与已有的制作方法进行了比较。该光栅同样具有电场可调性 ,当给器件施加一定的电压时 ,衍射光的强度和衍射斑的可见级次能被电场调制 ,最终实现光栅衍射特性的连续可调。

The method of fabricating a novel grating device composed of polymer dispersed liquid crystal film induced by holography is demonstrated. Its manufacturing mechanism has been analysed and compared with the old ways. This grating is adjustable by electric field. The experiments show that when the voltage is applied to the device, both diffraction light intensities and visible orders can be controlled electrically. The continuous modulation of diffraction properties of grating is realized.