数字全息再现中的积分核近似问题研究

The Integral Kernel Approximation of Numerical Reconstruction in Digital Holography

对数字全息再现中的菲涅耳近似核hFz和Fresnel-Kirchhoff衍射积核hz进行了理论分析。得出了在满足菲涅耳近似条件下,这两种积分核再现具有等同性,同时hFz核再现具有缩短计算时间的优点,并给出了利用hFz积分核数字再现的实验结果。而在数字全息显微术中,hz核再现可以得到高的分辨率,并进行了数值模拟。

Fresnel approximation integral and Fresnel - Kirchhoff integral kernel of numerical reconstruction in digital holography were analyzed theoretically. The results show that these two integral kernels are both valid when the Fresnel approximation is fulfilled, and has the merit of reducing the calculation time. The experimental results of numerical reconstruction in terms of are given. The high resolution of reconstruction can be obtained using in digital holographic microscopy, and numerical simulation is completed.