标题： 软物质中的计算机生成全息光栅 显示英文标题

标题： Computer-Generated Holographic Gratings in Soft Matter

摘要： 标准多光束全息术已被广泛用于聚合物-液晶复合材料中光栅的制备，如POLICRYPS、H-PDLC光栅和POLIPHEM [1]。 在这项工作中，我们提出了一种基于计算机生成全息术（CGH）的不同方法来制备液晶聚合物光栅。 使用CGH的主要优势在于不再需要干涉仪方案，从而避免了与干涉图长期稳定性及多光束复杂光学设置相关的问题。 此外，CGH技术允许更广泛的图案设计选择。 在这项初步研究中，我们获得了令人鼓舞的结果，例如在LC聚合物复合材料中实现了方波折射率调制的图案化，这种图案用标准双光束全息术无法实现。 显示英文摘要

摘要： Standard multiple-beam holography has been largely used to produce gratings in polymer-liquid crystal composites, like POLICRYPS, H-PDLC gratings and POLIPHEM [1]. In this work we present a different approach to liquid crystalpolymeric grating production, based on the Computer-Generated Holography (CGH). The great advantage of using CGH is that interferometer-based schemes are no longer necessary, avoiding problems related to long term stability of the interference pattern and multi-beam complex optical setup. Moreover, the CGH technique allows a wider choice of pattern designs. In this preliminary work, we obtained promising results, as for instance the patterning of a square-wave refractive index modulation of a LCpolymeric composite, a pattern which is not achievable with standard two-beam holography.