Investigation of phase objects using off-axis digital holography with a-priori known information on the reference wave

1st International Scientific School on Methods of Digital Image Processing in Optics and Photonics

物理学;计算机科学

Belashov, A.V.^1 ; Petrov, N.V.^2 ; Semenova, I.V.^1 ; Vasyutinskii, O.S.^1,3

Ioffe Physical Technical Institute, Polytekhnicheskaya 26, St.Petersburg

194021, Russia^1

Saint Petersburg National Research University of Information Technologies, Mechanics and Optics, 49 Kronverkskiy pr., St.Petersburg

197101, Russia^2

St.Petersburg State Polytechnic University

29, Polytekhnicheskaya, St.Petersburg

195251, Russia^3

关键词: Digital holograms;    Dynamic process;    Hologram reconstruction;    Interference patterns;    Off-axis digital holographies;    Phase reconstruction;    Reconstruction method;    Reference beams;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/536/1/012003/pdf
DOI  :  10.1088/1742-6596/536/1/012003

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Off-axis digital holography with a-priori known information on the reference wave allows phase reconstruction from a single interference pattern, thus, being a promising tool for investigations of dynamic processes. The paper presents the method aimed for estimation of angles between the object and reference wave from a single digital hologram. This information is essential for hologram reconstruction using a-priori known data on the reference wave and may also be beneficial in other reconstruction methods. The technique was validated using a specially prepared phase object; the recording was performed at various angles between the object and reference beams. Main factors affecting the reconstructed phase quality were analyzed.