Parallel three-step phase-shifting digital holography
Parallel three-step phase-shifting digital holography
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DOI：
10.1364/ao.45.002995
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发表时间：
2006-05-01
期刊：
影响因子：
1.9
通讯作者：
Matoba, O
中科院分区：
文献类型：
--
作者：
Awatsuji, Y;Fujii, A;Matoba, O
提出了一种基于相移干涉的三维物体无噪声瞬时测量技术--并行三步移相数字全息术。所提出的数字全息术利用位于参考光束中的相移阵列器件同时进行三步相移。该阵列器件具有周期性的三步位相分布，与传统的并行相移数字全息术相比，其结构得到简化。因此，所提出的并行相移数字全息术的光学系统更适合于所提出的全息术的实现。我们进行了数值模拟和初步实验。仿真和实验结果与传统相移法的结果吻合较好，优于单独使用菲涅耳变换的传统数字全息术的结果。从而验证了该方法的有效性。(C)2006年美国光学学会。
We propose parallel three-step phase-shifting digital holography as a technique capable of noiseless instantaneous measurement of three-dimensional objects based on phase-shifting interferometry. The proposed digital holography carries out three-step phase shifting at the same time by using a phase-shifting array device located in the reference beam. The array device has a periodic three-step phase distribution, and its configuration is simplified compared with that required for conventional parallel phase-shifting digital holography. Therefore the optical system of the proposed parallel phase-shifting digital holography is more suitable for the realization of the proposed holography. We conduct both a numerical simulation and a preliminary experiment. The results of the simulation and experiment agree well with those of the conventional phase-shifting method and are superior to the results obtained by conventional digital holography by using the Fresnel transform alone. Thus the effectiveness of the proposed technique is verified. (c) 2006 Optical Society of America.