公开(公告)号：US06404537B1

公开(公告)日：2002-06-11

申请号：US09519293

申请日：2000-03-06

申请人： Paul Melman ,  Yingyin Zou ,  Qiushui Chen

发明人： Paul Melman ,  Yingyin Zou ,  Qiushui Chen

IPC分类号： G05F133

CPC分类号： G02F1/0555 ,  G02F1/0136

摘要： A polarization transformer includes at least one plate of transparent polycrystalline material which has an optical axis oriented perpendicular to a propagation direction of incident radiation having a first polarization state. The plate includes electrodes for applying an electric field across a plane of the plate perpendicular to the propagation direction so as to provide controlled phase change such that the polarization of radiation transmitted through the polarization transformer is transformed from the first polarization state to a second polarization state. The plate in a preferred embodiment comprises a ferroelectric complex oxide such as lead lanthanum zirconate titanate (PLZT) material. Such a material provides devices that have very fast response (on the order of microseconds) and low insertion loss.

摘要翻译： 偏振变换器包括至少一个透明多晶材料板，其具有垂直于具有第一偏振状态的入射辐射的传播方向定向的光轴。 板包括用于垂直于传播方向在平板平面上施加电场的电极，以便提供受控的相位变化，使得透过偏振变换器的辐射的偏振从第一偏振状态转变为第二偏振状态 。 优选实施例中的板包括铁电复合氧化物，例如锆钛酸铅镧（PLZT）材料。 这种材料提供了具有非常快的响应（微秒数量级）和低插入损耗的器件。