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Vortex analysis in dynamic speckle images.

Gonzalo H Sendra1, Héctor J Rabal, Ricardo Arizaga

  • 1Centro de Investigaciones Opticas (CONICET La Plata-CIC) and UID Optimo, Area de Ciencias Básicas, Facultad de Ingeniería, Universidad Nacional de La Plata, P.O. Box 3, 1897 Gonnet, La Plata, Argentina. ghsendra@ciop.unlp.edu.ar

Journal of the Optical Society of America. A, Optics, Image Science, and Vision
|December 4, 2009
PubMed
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Optical vortex analysis in dynamic speckle patterns reveals limitations for precise displacement measurements. Boiling phenomena introduce Brownian motion, impacting metrology accuracy.

Area of Science:

  • Optical metrology
  • Dynamic light scattering

Background:

  • Optical vortex analysis is a key technique in optical metrology.
  • It offers nanometric precision for measuring small displacements.

Purpose of the Study:

  • To analyze optical vortex behavior in dynamic speckle patterns, specifically with boiling.
  • To identify limitations of optical vortex metrology under these conditions.

Main Methods:

  • Investigated translational speckle patterns with boiling.
  • Evaluated pure boiling speckle patterns.
  • Utilized numerical and experimental approaches.

Main Results:

  • Determined the limitations of optical vortex metrology in translational boiling patterns.

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  • Developed a quantitative descriptor for boiling activity in speckle patterns.
  • Observed Brownian motion of optical vortices in pure boiling patterns.

    • Conclusions:

    • Boiling phenomena in dynamic speckle patterns significantly affect optical vortex behavior.
    • Understanding these effects is crucial for refining optical metrology techniques and their precision limits.