Variable shape or variable diameter flattop beam tailored by using an adaptive weight FFT-based iterative algorithm and a phase-only liquid crystal spatial light modulator

Variable shape or variable diameter flattop beam tailored by using an adaptive weight FFT-based iterative algorithm and a phase-only liquid crystal spatial light modulator
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使用基于自适应权重 FFT 的迭代算法和纯相位液晶空间光调制器定制可变形状或可变直径平顶光束

DOI:
10.1016/j.optcom.2012.08.081
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发表时间:
2012-11
影响因子:
2.4
通讯作者:
Yang Xia
Yang Xia
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Dong Wang;Jian Zhang;Hao Wang;Yang Xia

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介绍了一种基于自适应权重fft迭代算法(AWFFT-IA)和纯相位液晶空间光调制器(PO-LCSLM)的变形状或变直径平顶光束整形技术。该算法用于设计将中心对称激光束裁剪成所需形状或直径的平顶光束的相位分布,PO-LCSLM作为动态可编程相位滤波器,根据所设计的相位分布来延迟入射波前。实验结果表明,该技术可以实现变形状或变直径平顶梁的整形。
The variable shape or variable diameter flattop beam shaping technique by using an adaptive weight FFT-based iterative algorithm (AWFFT-IA) and a phase-only liquid crystal spatial light modulator (PO-LCSLM) is demonstrated. The algorithm is used to design the phase distribution for tailoring central symmetric laser beam into the desired shape or diameter flattop beam, the PO-LCSLM serves as dynamically programmable phase filters, which depend on the designed phase distributions, to retard the incident wavefront as we would expect. The experimental results show that the technique can realize variable shape or variable diameter flattop beam shaping.
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