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Redistribution of the zero order by the use of a phase checkerboard pattern in computer generated holograms

机译:通过在计算机生成的全息图中使用相位棋盘图案来重新分配零级

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摘要

A checkerboard phase plate is proposed to be used together with computer generated holograms to eliminate the zero order by working as a convolution function that shifts the zero order away from the center of a reconstructed pattern. By performing a preshift in the desired hologram pattern, it is possible to obtain a reconstructed pattern that is free of zero order. Simulation results have shown that the technique is tolerant of fabrication errors in the hologram. The technique is also shown to effectively reduce the zero order intensity by two orders in the presence of phase depth errors in the checkerboard. Experimental results using a spatial light modulator support the results shown in the simulation.
机译:提议将棋盘相位板与计算机生成的全息图一起使用,以通过充当卷积函数来消除零阶,该卷积函数将零阶移离重构图案的中心。通过以期望的全息图图案执行预移位,可以获得零阶的重构图案。仿真结果表明,该技术可容忍全息图中的制造误差。该技术还显示出在棋盘中存在相位深度误差的情况下,可以有效地将零级强度降低两个数量级。使用空间光调制器的实验结果支持仿真中显示的结果。

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