Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, Guangzhou 510006, China.
Opt Lett. 2013 May 1;38(9):1506-8. doi: 10.1364/OL.38.001506.
In this Letter, the character of Euclidean matrix norm (EMN) of the intensity difference between phase-shifting interferograms, which changes in sinusoidal form with the phase shifts, is presented. Based on this character, an EMN phase shift extraction algorithm is proposed. Both the simulation calculation and experimental research show that the phase shifts with high precision can be determined with the proposed EMN algorithm easily. Importantly, the proposed EMN algorithm will supply a powerful tool for the rapid calibration of the phase shifts.
在这封信件中，提出了相移干涉图之间强度差的欧几里得矩阵范数（EMN）的特征，该特征随相移呈正弦形式变化。基于此特征，提出了一种 EMN 相移提取算法。模拟计算和实验研究均表明，该 EMN 算法可以轻松确定高精度的相移。重要的是，所提出的 EMN 算法将为相移的快速校准提供有力工具。
