Holography, speckle, and computers

Ichirou Yamaguchi

doi:10.1117/12.429610

13 June 2001 Holography, speckle, and computers

Ichirou Yamaguchi

Proceedings Volume 4317, Second International Conference on Experimental Mechanics; (2001) https://doi.org/10.1117/12.429610
Event: Second International Conference on Experimental Mechanics, 2000, Singapore, Singapore

Abstract

Fringe formations in holographic interferometry and speckle metrology are discussed in terms of correlation functions of randomly varying complex amplitude of light diffusely reflected from rough surface with the goal of surveying quantitative and automatic measurements by these methods. Dependencies of observed patterns on object deformation and optical systems are explained. Physical meanings of the derived relationships are explained in terms of dynamic behaviors of speckles resulting from surface deformation. Automatic measurements are described starting form analysis of fringe patterns resulting from photographic recording of specklgrams to digital recording of speckle patterns followed by direct digital correlation techniques and digital holography that uses both digital recording and reconstruction of holograms.

Citation Download Citation

Ichirou Yamaguchi "Holography, speckle, and computers", Proc. SPIE 4317, Second International Conference on Experimental Mechanics, (13 June 2001); https://doi.org/10.1117/12.429610

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