2.5-dimensional polymer-based holograms with individually adjustable structure angle
2.5-dimensional polymer-based holograms with individually adjustable structure angle
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2 个 5 维聚合物全息图，结构角度可单独调节
DOI：
10.1117/12.2320991
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Bergmann
中科院分区：
文献类型：
--
作者：
Thiemicke;Falldorf;Bergmann
我们提出了基于聚合物的全息图，每个微米大小的像素具有不同的结构角度。利用迭代优化过程来数值计算全息图，该迭代优化过程包括一阶泰勒级数展开以确定每个像素的斜率。全息图是用三维激光光刻制作的。由于每个像素的小像素大小和单独的斜率，可以避免混叠，并且与由更大且均匀的像素组成的全息图相比，所需投影的整体强度大大增加。此外，计算的光强分布与测量的光强分布之间的偏差也大大减小。
We present polymer-based holograms with varying structure angle for each individual micrometer-sized pixel. The holograms are numerically calculated utilizing an iterative optimization procedure including a first-order Taylor series expansion to determine the slope of each pixel. The holograms are fabricated by 3D laser lithography. Due to the small pixel sizes and the individual slope of each pixel aliases can be avoided and the overall intensity of the desired projection is strongly increased compared to holograms consisting of larger and uniform pixels. Furthermore, the discrepancy between calculated and measured intensity distribution is strongly reduced.
结合制造工艺特性的金刚石车削全息图设计。
影响因子：
1.9
作者：
C. Dankwart;C. Falldorf;R. Gläbe;A. Meier;C. Kopylow;R. Bergmann
通讯作者：
R. Bergmann