Reduction of the effect of aberrations in a joint-transform correlator

被引：2

作者：

Pérez-Tudela, J ^{[1
]}

Juvelis, I ^{[1
]}

Montes-Usategui, M ^{[1
]}

Vallmitjana, S ^{[1
]}

Carnicer, A ^{[1
]}

机构：

[1] Univ Barcelona, Dept Fis Aplicada & Opt, E-08028 Barcelona, Spain

来源：

APPLIED OPTICS | 2004年 / 43卷 / 04期

关键词：

D O I：

10.1364/AO.43.000841

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report the study of the influence of optical aberrations in a joint-transform correlator: The wave aberration of the optical system is computed from data obtained by ray tracing. Three situations are explored: We consider the aberration only in the first diffraction stage (generation of power spectrum), then only in the second (transformation of the power spectrum into correlation), and finally in both stages simultaneously. The results show that the quality of the correlation is determined mostly by the aberrations of the first diffraction stage and that we can optimize the setup by moving the cameras along the optical axis to a suitable position. The good agreement between the predicted data and the experimental results shows that the method explains well the behavior of optical diffraction systems when aberrations are taken into account. (C) 2004 Optical Society of America.

引用

页码：841 / 849

页数：9

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