将明胶涂覆在表面经过取向处理的带有 ITO电极的玻璃基板上,以紫外灯为光源,通过光掩模法,使明胶在光场的引发下发生光化学反应,样品显影刻蚀处理后呈栅状,将液晶注入光栅盒中,形成聚合物 /液晶光栅.该光栅衍射效率可利用电场调控.采用 He-Ne激光器对所制样品进行测试,结果表明,所制样品的栅结构较好,避免了液晶与聚合物相分离的不完全性和栅条边缘不整齐的现象.制得的光栅其第一衍射级次的开关比为 87: 1,显示了较好的开关能力.
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