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14 September 2018 2.5-dimensional polymer-based holograms with individually adjustable structure angle
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Abstract
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.
Conference Presentation
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Thorsten Klein, Fabian Thiemicke, Claas Falldorf, and Ralf B. Bergmann "2.5-dimensional polymer-based holograms with individually adjustable structure angle", Proc. SPIE 10744, Laser Beam Shaping XVIII, 107440A (14 September 2018); https://doi.org/10.1117/12.2320991
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