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25 August 2009 Phase shifting technique in digital holography
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Proceedings Volume 7375, ICEM 2008: International Conference on Experimental Mechanics 2008; 737549 (2009)
Event: International Conference on Experimental Mechanics 2008 and Seventh Asian Conference on Experimental Mechanics, 2008, Nanjing, China
Phase shifting technique is an effective approach to eliminate the zero order diffraction and the conjugate image in numerical reconstruction of digital holography. In this paper, the diffraction optical field of each component of a digital hologram is simulated solely and numerically by Fresnel diffractive integral. Based on this work two algorithms for two and three step phase shifting digital holography are proposed. The simulating results of two algorithms show that the proposed two phase shifting methods can not only recover the object wave front alone but also simplify the measurement process when compared with the usual four-step phase shifting method, because fewer phase shifting steps are needed accordingly. The proposed two algorithms may be a very useful reference for various kinds of measurement using the digital holography in practice.
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Eliang Dong, Xin Kang, Jianan Chi, and Xiaoyuan He "Phase shifting technique in digital holography", Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 737549 (25 August 2009);

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