聚合物分散液晶(PDLC)光栅的制备及其光衍射特性

Fabrication of PDLC Grating and Its Optical Diffractive Properties

聚合物分散液晶（ＰＤＬＣ）光栅的制备及其光衍射特性任洪文黄锡珉王宗凯马凯（中国科学院长春物理研究所北方液晶研究开发中心长春１３００２１）ＦａｂｒｉｃａｔｉｏｎｏｆＰＤＬＣＧｒａｔｉｎｇａｎｄＩｔｓＯｐｔｉｃａｌＤｉｆｒａｃｔｉｖｅＰｒｏｐｅｒｔｉｅｓ...

Abstract A diffraction grating, which is composed of a polymer dispersed liquid crystal(PDLC) film and a periodic striped electrode structure has been fabricated. Due to PDLC electrooptical properties, this grating can cause a scattering or a diffraction of an incident light dependence upon the applied voltages, i. e. it is adjustable by electric field. Results show that the diffraction light intensities or diffraction orders can be controlled electrically. Moreover, the linear polarization state of the incident light can be changed into an elliptical polarization state.