电控聚合物分散液晶全息透镜及特性研究
Diffraction and properties of holographic polymer dispersed liquid crystal switchable lens
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摘要: 报道位相型电控聚合物分散液晶(H-PDLC)全息衍射透镜的研制及特性研究,理论上,根据耦合波理论,研究了不同的相分离程度系数下,理想位相型电控聚合物分散液晶(H-PDLC)全息衍射透镜在可见光波长(400-800nm)的衍射特性.实验研制了衍射效率最高为70%的电控H-PDLC变焦透镜样品,研究表明H-PDLC透镜具有优良的成像特性,和快速响应的电控开关特性,在光学成像系统,光通信系统中具有良好的应用前景.Abstract: A holographic polymer dispersed liquid crystal(H-PDLC)switchable lens is reported.The diffraction efficiency was analyzed at different phase separation coefficients within the visible band(400-800 nm)with the coupled wave theory for a phase-type H-PDLC switchable lens.In our experiments,the maximum efficency of 70%was achieved.The H-PDLC switchable lens shows excellent imaging performance and fast response.It is potentially useful in many applications.such as optical communications,optical imaging,e.g.,in digital cameras.
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