Design of an Optical System for Phase Retrieval based on a Spatial Light Modulator
Design of an Optical System for Phase Retrieval based on a Spatial Light Modulator
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基于空间光调制器的相位恢复光学系统设计
DOI：
10.1063/1.3426124
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发表时间：
2010
期刊：
影响因子：
1.9
通讯作者：
R. Bergmann
中科院分区：
文献类型：
--
作者：
C. Falldorf;M. Agour;C. Kopylow;R. Bergmann
我们提出了一个光学配置的相位恢复从一系列的强度测量。该设置基于具有位于傅立叶域中的相位调制空间光调制器（SLM）的4f配置。SLM用于利用传播的传递函数调制入射光，因此可以在公共传感器平面上捕获所受波场的一系列传播表示。该技术的主要优点是大大缩短了测量时间，因为在整个测量过程中不需要对相机传感器进行机械调整。本文主要研究传感器领域的波场分析。从讨论中得出一组参数，以尽量减少干扰所产生的SLM的离散性质的影响。最后，通过波场传感的实验研究证明了这种方法的巨大潜力。
We present an optical configuration for phase retrieval from a sequence of intensity measurements. The setup is based on a 4f‐configuration with a phase modulating spatial light modulator (SLM) located in the Fourier domain. The SLM is used to modulate the incoming light with the transfer function of propagation, thus a sequence of propagated representations of the subjected wave field can be captured across a common sensor plane. The main advantage of this technique is the greatly reduced measurement time, since no mechanical adjustment of the camera sensor is required throughout the measurement process. The treatise is focused on the analysis of the wave field in the sensor domain. From the discussion a set of parameters is derived in order to minimize disturbing effects arising from the discrete nature of the SLM. Finally, the big potential of this approach is demonstrated by means of experimental investigations with regard to wave field sensing.