Cylindrical wavefront shearing interference and its possible application

Xiang Chun Liang; G. C. Tang

doi:10.1117/12.22242

1 July 1990 Cylindrical wavefront shearing interference and its possible application

Xiang Chun Liang, G. C. Tang

Proceedings Volume 1319, Optics in Complex Systems; (1990) https://doi.org/10.1117/12.22242
Event: 15th International Optics in Complex Systems, 1990, Garmisch, Germany

Abstract

According to the fact that a shearing interferogram cou''d be observed from the commercial test tubes and bottles the theoretical and experimental work have been performed for the cylindrical shearing interference to examine the thickness and distortion of the glass test tubes and bottles. An interferogram can be observed in reflected direction while a He-Ne laser beam is incident upon the surface of a commercial test tube or bottle. The interferograms are changed with the diameters and thicknesses of the test tubes and bottles. Some of tubes and bottles can generate a clear series of the interfertnce fringes and some can only gencrate a indistinct fringe series. Some tubes and bottles even can not generate any interfence fringes. These phenomena led to our interest in studing the cylindrical wavefront shearing interFerence and in examining the optical quality of the commercial glass test tubes and bottles. Suppose that a parallel plane wave is incident upon a test tube. This parallel pline wave will split into tWO divergent cylindrical waves after reflection from the outside and inside surfaces ul the test tube. The cylindrical centers of these tWO waves are located at two focussed lines which are formed by the two surfaces. These two cylindrical waves are coherent and will form an interferogram due to the wavfront shearing interference because of the difrerence in the wavefront radii. According to this model a expression

Citation Download Citation

Xiang Chun Liang and G. C. Tang "Cylindrical wavefront shearing interference and its possible application", Proc. SPIE 1319, Optics in Complex Systems, (1 July 1990); https://doi.org/10.1117/12.22242

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