Correlation distance of dynamic speckles.

  title={Correlation distance of dynamic speckles.},
  author={N Takai and Toshiya Iwai and Toshio Asakura},
  journal={Applied optics},
  volume={22 1},
The translational and boiling motions of dynamic speckles produced in the Fresnel diffraction field under illumination of a Gaussian beam are investigated in detail. The speckle motion is analyzed from the space-time cross-correlation function of speckle intensity fluctuations detected at the two points in the receiving plane. The correlation distance of time-varying speckles is compared with the translation distance of the spatial speckle pattern. The optical conditions for the translational… CONTINUE READING