University of Valencia, 3D Imaging and Display Laboratory, Department of Optics, Burjassot E-46100, Spain.
Opt Lett. 2013 Apr 15;38(8):1352-4. doi: 10.1364/OL.38.001352.
Inaccuracies introduced in quantitative phase digital holographic microscopy by the use of nontelecentric imaging systems are analyzed. Computer modeling of the experimental result shows that even negligible errors in the radius and center of curvature of the numerical compensation needed to get rid of the remaining quadratic phase factor introduce errors in the phase measurements; these errors depend on the position of the object in the field-of-view. However, when a telecentric imaging system is utilized for the recording of the holograms, the numerical modeling and experimental results show the shift-invariant behavior of the quantitative-phase digital holographic microscope.
分析了在使用非远心成像系统的定量相位数字全息显微镜中引入的不准确性。实验结果的计算机模拟表明，即使在消除剩余二次相位因子所需的数值补偿的半径和曲率中心存在微不足道的误差，也会引入相位测量中的误差；这些误差取决于物体在视场中的位置。然而，当使用远心成像系统记录全息图时，数值建模和实验结果显示了定量相位数字全息显微镜的平移不变性。
