Fringe Formation Of Shearing Speckle Interferometry

Jiabi Chen; F. P. Chiang

doi:10.1117/12.941684

17 February 1987 Fringe Formation Of Shearing Speckle Interferometry

Jiabi Chen, F. P. Chiang

Proceedings Volume 0814, Photomechanics and Speckle Metrology; (1987) https://doi.org/10.1117/12.941684
Event: 31st Annual Technical Symposium on Optical and Optoelectronic Applied Sciences and Engineering, 1987, San Diego, CA, United States

Abstract

Statistical approach is utilised to analyse the formation of displacement gradient fringes created by shearing speckle interferometry in this paper. We calculated the impulse response function and studied the spectrum of shearing specklegram in detail. Then the optical filtering system of shearography is analysed and we found that the cosine fringes are related to the displacement gradient upon condition that the displacement component along the X-axis, can be negleected, and the fringe visibility depends on the size of filtering holes and the in-plane displacement components.

Citation Download Citation

Jiabi Chen and F. P. Chiang "Fringe Formation Of Shearing Speckle Interferometry", Proc. SPIE 0814, Photomechanics and Speckle Metrology, (17 February 1987); https://doi.org/10.1117/12.941684

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