摘要
提出了一种基于时域傅里叶变换的广义相移相位恢复方法。该方法不需要对相移量进行特殊标定,就可从一系列相移量单调变化的干涉条纹图中快速地恢复出物体的相位。由于所提方法是运用傅里叶变换逐点从频域提取物体的相位,所以该方法不仅具有良好的抗干扰性能,而且对干涉图中的条纹数目没有要求,可以从条纹数少于1的相移干涉图中精确地恢复相位。数值模拟与实验结果均表明所提方法具有操作简单、方便、快速、精度高等优点。
An generalized phase-shifting phase retrieval approach based on time-domain Fourier transform（TFT）is proposed. There is no the special requirement for the phase shift calibration, and the measured phase can be retrieved quickly from a sequence of interferograms whose phase shifts are changed monotonously. By using Fourier transform to obtain the object’s phase point-by-point from the frequency domain, the proposed method not only has good anti-interference performance, but also the fringe number of the interferogram is not required. Even in the case that the fringe number of the interferogram is less than one, the proposed approach still works well. Both the numerical simulation and experimental results show that the proposed approach is simple, convenient, fast and high precision.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2015年第9期262-268,共7页
Chinese Journal of Lasers
基金
国家自然科学基金(61275015
61177005
61475048)
关键词
测量
干涉测量
广义相移干涉测量
傅里叶变换
相位恢复
measurement
interferometry
generalized phase-shifting interferometry
Fourier transform
phase retrieval
作者简介
张望平（1989-），男，硕士研究生，主要从事数字全息与相位测量方面的研究。E-mail：zhangwp@m．scnu．edu．cn
导师简介：钟丽云（1968-），女，博士，教授，主要从事光学微纳成像和生物单分子探测等方面的研究。E-mail：zhongly@scnu．edu．cn
