6
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Reducing phase singularities in speckle interferometry by coherence tailoring

      Preprint
      ,

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Speckle interferometry is an established optical metrology tool for the characterization of rough objects. The raw phase, however, is impaired by the presence of phase singularities, making the unwrapping procedure ambiguous. In a Michelson setup, we tailor the spatial coherence of the light source, achieving a physical averaging of independent, mutually incoherent speckle fields. In the resulting raw phase, the systematic phase is preserved while the number of phase singularities is greatly reduced. Both interferometer arms are affected by the averaging. The reduction is sufficient to even allow the use of a standard unwrapping algorithm originally developed for smooth surfaces only.

          Related collections

          Author and article information

          Journal
          2016-11-09
          Article
          1611.02987
          803ab294-427e-4b75-84c9-1214157f27e0

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

          History
          Custom metadata
          physics.optics

          Optical materials & Optics
          Optical materials & Optics

          Comments

          Comment on this article