Theory and applications of dynamic laser speckles due to in-plane object motion

Ichirou Yamaguchi, Shinichi Komatsu

Research output: Contribution to journalArticlepeer-review

63 Citations (Scopus)


The dynamic behaviour of laser speckle caused by uniform in-plane motion of a diffuse object has been studied by deriving the cross-correlation functions of the complex disturbance and the intensity in a field where the speckle is observed. The expressions for the diffraction and the image fields are calculated from general formulae for a linear coherent system. On the basis of these functions two characters in the dynamic behaviour of speckle, a bodily translation and a gradual change in structure, are discussed quantitatively. The velocity of the translation and the rate of the structure change have been derived. As applications of the relations obtained several new methods have been proposed for measuring pattern correlations, MTF of imaging systems, in-plane velocity of diffuse objects, and eye accommodation state.

Original languageEnglish
Pages (from-to)705-724
Number of pages20
JournalOptica Acta
Issue number7
Publication statusPublished - 1977
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials


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