Investigation of smooth wave fronts using SLM-based phase retrieval and a phase diffuser
Investigation of smooth wave fronts using SLM-based phase retrieval and a phase diffuser
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DOI：
10.2971/jeos.2012.12046
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发表时间：
2012-01-01
影响因子：
1.5
通讯作者：
Falldorf, C.
中科院分区：
文献类型：
--
作者：
Agour, M.;Almoro, P. F.;Falldorf, C.
实验证明了一种利用空间光调制器(SLM)和位相漫射器快速重建平滑波前的位相恢复技术。借助相位漫射器(最大相移，ΔPhi=0.85pi)对平滑测试对象进行漫射照明导致强度测量的显著多样性，这进而有利于非停滞迭代相位重建。SLM的使用实现了准确和快速的散斑强度记录和对设置中的未对准的主动校正。该技术的有效性在镜片的光学测试中得到了验证。[DOI：http://dx.doi.org/10.2971/jeos.2012.12046]
A phase retrieval technique using a spatial light modulator (SLM) and a phase diffuser for a fast reconstruction of smooth wave fronts is demonstrated experimentally. Diffuse illumination of a smooth test object with the aid of a phase diffuser (maximum phase shift, Delta phi = 0.85 pi) results in a significant diversity in the intensity measurements which, in turn, is beneficial for a non-stagnating iterative phase reconstruction. The use of the SLM enables accurate and fast speckle intensity recording and active correction of misalignments in the setup. The effectiveness of the technique is demonstrated in the optical testing of lenses. [DOI: http://dx.doi.org/10.2971/jeos.2012.12046]