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High-quality generation of a multispot pattern using a spatial light modulator with adaptive feedback

机译:使用具有自适应反馈的空间光调制器高质量生成多点图案

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摘要

We propose and demonstrate high-quality generation of a uniform multispot pattern (MSP) by using a spatial light modulator with adaptive feedback. The method iteratively updates a computer generated hologram (CGH) using correction coefficients to improve the intensity distribution of the generated MSP in the optical system. Thanks to a simple method of determining the correction coefficients, the computational cost for optimizing the CGH is low, while maintaining high uniformity of the generated MSP. We demonstrate the generation of a 28 X 28 square-aligned MSP with high uniformity. Additionally, the proposed method could generate an MSP with a gradually varying intensity profile, as well as a uniform MSP consisting of more than 1000 spots arranged in an arbitrary pattern.
机译:我们提出并演示了通过使用具有自适应反馈的空间光调制器来产生高质量的均匀多点图案(MSP)。该方法使用校正系数迭代地更新计算机生成的全息图(CGH),以改善光学系统中生成的MSP的强度分布。由于确定校正系数的简单方法,用于优化CGH的计算成本较低,同时又保持了生成的MSP的高度均匀性。我们演示了具有高均匀度的28 X 28正方形对齐的MSP的生成。另外,所提出的方法可以产生具有逐渐变化的强度分布的MSP,以及由以任意图案排列的1000多个斑点组成的均匀MSP。

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