ALGORITHM FOR PHASE-DIFFERENCE MEASUREMENT IN PHASE-SHIFTING INTERFEROMETRY

被引:20
|
作者
VIKRAM, CS
WITHEROW, WK
TROLINGER, JD
机构
[1] NASA, GEORGE C MARSHALL SPACE FLIGHT CTR, SPACE SCI LAB, HUNTSVILLE, AL 35812 USA
[2] METROLASER, IRVINE, CA 92714 USA
来源
APPLIED OPTICS | 1993年 / 32卷 / 31期
关键词
D O I
10.1364/AO.32.006250
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A phase-shifting algorithm is proposed and experimentally demonstrated for phase-difference analysis. The method involves only three steps, the original and two equal in amount but unknown phase steps for each stage. Only six frames of data are thus sufficient for the phase-difference analysis between two stages. Real-time holographic interferometry with a concentration change in a sugar-water solution in a test cell is presented for experimental verification.
引用
收藏
页码:6250 / 6252
页数:3
相关论文
共 50 条