1 May 1998 Hybrid wedge plate-grating interferometer for collimation testing
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A new type of collimation testing technique using a single wedge plate in conjunction with a dual-field grating has been described. Interference pattern produced by a wedge plate illuminated by the test beam is superposed on a grating to get moire fringes. By using two different types of dual-field gratings, two testing configurations are obtained. These dual-field moire patterns provide self-referencing and improved sensitivity in collimation testing. The principle of the proposed techniques and experimental results are presented.
J. S. Darlin, J. S. Darlin, Mahendra P. Kothiyal, Mahendra P. Kothiyal, Rajpal S. Sirohi, Rajpal S. Sirohi, } "Hybrid wedge plate-grating interferometer for collimation testing," Optical Engineering 37(5), (1 May 1998). https://doi.org/10.1117/1.601672 . Submission:


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