科研之友
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摘要
An iterative approach is proposed to eliminate the zero-order term from an off-axis multiplexed hologram that contains several sub-holograms. The zero-order components of each sub-hologram are effectively eliminated one by one using the proposed iterative procedure. Because of the reduction of the zero-order components in the frequency domain, enlarged filtering windows can be used to separate each of the +1 order components and improve the signal-to-noise ratio. The proposed method does not require prior knowledge of the object images, and only needs each of the reference wave intensities, which can be acquired before acquisition of the multiplexed hologram. The feasibility of the proposed approach is confirmed through mathematical deductions and numerical simulations, and the robustness of the proposed approach is verified using a practical multiplexed hologram.
- 出版日期2017-1-15
- 单位南开大学
