An Adjustable Sensitivity Speckle Shearing Interferometric Technique Using A Single Grating

Liu Jiading; Yue Chenglin; Duanmu Gang

doi:10.1117/12.969138

7 June 1989 An Adjustable Sensitivity Speckle Shearing Interferometric Technique Using A Single Grating

Liu Jiading, Yue Chenglin, Duanmu Gang

Proceedings Volume 1032, 18th Intl Congress on High Speed Photography and Photonics; (1989) https://doi.org/10.1117/12.969138
Event: 18th International Congress on High Speed Photography and Photonics, 1988, Xi'an, Shaanxi, China

Abstract

The paper proposes a new peckle shearing interferometry using a rectangular grating as a shearing component, it has an advantage of an adjustable sensitivity after measurement, and remains the advantage of shearing interferometry using a sinusoidal grating. The rectangular grating diffracts the light in many order, the light interference among these orders produce the differential shearing patterns. Because the shearing amount of this method is changed with the diffraction order and diffraction angle, the sensitivity of the interference fringe pattern can be adjustable. The paper gives the practical parameters. To verify the method, we take the photos of loading cantiliver beam.

Citation Download Citation

Liu Jiading, Yue Chenglin, and Duanmu Gang "An Adjustable Sensitivity Speckle Shearing Interferometric Technique Using A Single Grating", Proc. SPIE 1032, 18th Intl Congress on High Speed Photography and Photonics, (7 June 1989); https://doi.org/10.1117/12.969138

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