Stochastic dual-plane on-axis digital holography based on Mach–Zehnder interferometer

Fengpeng Wang; Dayong Wang; Lu Rong; Yunxin Wang; Jie Zhao

doi:10.1117/12.2245141

27 September 2016 Stochastic dual-plane on-axis digital holography based on Mach–Zehnder interferometer

Fengpeng Wang, Dayong Wang, Lu Rong, Yunxin Wang, Jie Zhao

Proceedings Volume 9684, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test, Measurement Technology, and Equipment; 96840E (2016) https://doi.org/10.1117/12.2245141
Event: Eighth International Symposium on Advanced Optical Manufacturing and Testing Technology (AOMATT2016), 2016, Suzhou, China

Abstract

For traditional dual-plane on-axis digital holography, the robustness is lower because it is difficult to maintain the stability of the phase difference between the object beam and the reference beam, and it may be invalid when the objects are on the surface of a medium with uneven thickness. An improved dual-plane digital holographic method based on Mach–Zehnder interferometer is presented to address these problems. Two holograms are recorded at two different planes separated by a small distance. Then, the zero-order image and conjugated image are eliminated by Fourier domain processing. In order to enhance the robustness of the system, the object is illuminated by a stochastic beam that is a speckle wave produced by a diffuser. Simulated and experimental results are shown to demonstrate that the proposed method has greater robustness than the traditional dual-plane on-axis digital holography and it can be used to imaging on the irregular surface of a transparent medium.

Citation Download Citation

Fengpeng Wang, Dayong Wang, Lu Rong, Yunxin Wang, and Jie Zhao "Stochastic dual-plane on-axis digital holography based on Mach–Zehnder interferometer", Proc. SPIE 9684, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test, Measurement Technology, and Equipment, 96840E (27 September 2016); https://doi.org/10.1117/12.2245141

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