Speckle shearing interferometry using a diffractive optical beamsplitter

被引：20
|
作者：
Gundlach, A
Huntley, JM
Manzke, B
Schwider, J
机构：
[1] UNIV LOUGHBOROUGH, DEPT MECH ENGN, LOUGHBOROUGH LE11 3TU, LEICS, ENGLAND
[2] UNIV ERLANGEN NURNBERG, INST APPL OPT, D-91058 ERLANGEN, GERMANY
来源：
OPTICAL ENGINEERING | 1997年 / 36卷 / 05期
关键词：
speckle; shearing interferometry; shearography; diffractive optics; nondestructive testing; PHASE; ALGORITHM;
D O I：
10.1117/1.601351
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A novel shearing interferometer is described that uses an optimized phase grating as the shearing element. The method has a number of advantages over a conventional Michelson interferometer shearing device, including light efficiency, simplicity, and low cost. Quantitative fringe analysis is easily carried out by in-plane translation of the grating and the use of standard phase-shifting algorithms. The influence of higher diffraction orders on the noise in the measured phase distributions is discussed. (C) 1997 Society of Photo-Optical Instrumentation Engineers.
引用
收藏
页码：1488 / 1493
页数：6
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