Digital speckle-pattern interferometry:: fringe retrieval for large in-plane deformations with digital speckle photography

被引：30

作者：

Andersson, A ^{[1
]}

Runnemalm, A ^{[1
]}

Sjödahl, M ^{[1
]}

机构：

[1] Lulea Univ Technol, Div Expt Mech, SE-97187 Lulea, Sweden

来源：

APPLIED OPTICS | 1999年 / 38卷 / 25期

关键词：

D O I：

10.1364/AO.38.005408

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The compensation of large in-plane motions in digital speckle-pattern interferometry (DSPI) with the use of digital speckle photography (DSP) is demonstrated. Ordinary recordings of DSPI are recombined and analyzed with DSP. The DSP result is used to compensate for the bulk speckle motion prior to calculation of the phase map. This results in a high fringe contrast even for deformations of several speckle diameters. In addition, for the case of an in-plane deformation, it is shown that the absolute phase change in each pixel may be unwrapped by use of the DSP result as an initial guess. The principles of this method and experiments showing the in-plane rotation of a plate and the encounter of two rounded plates are presented. (C) 1999 Optical Society of America.

引用

页码：5408 / 5412

页数：5

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