Temporal phase retrieval from a complex field in digital holographic interferometry

被引：13
|
作者：
Quan, Chenggen [1 ]
Tay, Cho Jui [1 ]
Chen, Hao [1 ]
机构：
[1] Natl Univ Singapore, Dept Mech Engn, Singapore 117576, Singapore
来源：
OPTICS LETTERS | 2007年 / 32卷 / 12期
关键词：
D O I：
10.1364/OL.32.001602
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We describe a novel method of processing complex phasors in digital holographic interferometry (DHI). Unlike the commonly used digital phase subtraction method that operates on the phase itself, the proposed method operates on the complex phasor instead. Two temporal phase retrieval algorithms are developed in which the complex phasor of each pixel is measured and analyzed as a function of time. The developed algorithms are demonstrated in profile measurement of step heights. Experimental results show that the proposed phase retrieval algorithms for DHI perform well compared with conventional methods. (c) 2007 Optical Society of America.
引用
收藏
页码：1602 / 1604
页数：3
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