MOIRE INTERFEROMETRY WITH WHITE-LIGHT

被引：14

作者：

POST, D

机构：

[1] Virginia Polytechnic Institute and State University, Engineering Science and Mechanics Department, Blacksburg, VA

来源：

APPLIED OPTICS | 1979年 / 18卷 / 24期

关键词：

D O I：

10.1364/AO.18.004163

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

While high-sensitivity moiré interferometry requires monochromatic light, an auxiliary compensator grating removes the requirement. Experimental verification utilized white light for moiré interference of sensitivity 0.833 μm/fringe. Configurations readily amenable to compensation include moiré fringe multiplication by even factors and the minimum-deviation arrangement. Chromatic compensation is effective with virtual reference gratings as well as real reference gratings; in both cases the moiré interference system becomes achromatic. Compensation provides the special quality of nearly zero phase difference-an actual range of ±π-between interfering beams. Potential applications include use of electrical spark light sources for high-sensitivity dynamic moiré photography. © 1979 Optical Society of America.

引用

页码：4163 / 4167

页数：5