Statistical studies on optical vortices in dynamic speckle fields

Anindya Majumdar
Department of Biomedical Engineering, Michigan Technological University, Houghton, MI, USA

Sean J. Kirkpatrick (Login required)
Department of Biomedical Engineering, Michigan Technological University, Houghton, MI, USA


Paper #3283 received 7 Mar 2018; revised manuscript received 16 May 2018; accepted for publication 17 May 2018; published online 27 May 2018.

DOI: 10.18287/JBPE18.04.020301

Abstract

New parameters to statistically describe and differentiate between different decorrelation behaviors in dynamic speckle fields are described. These decorrelation behaviors are surrogate descriptors of the dynamics of the underlying processes in object space being observed.  The statistical parameters are based on the temporal variations in the location of optical vortices in the speckle fields. The length and number of optical vortex trails, motion of the vortices in the plane of observation and the distance between the mean locations of the positive and negative vortices are investigated. The implementation of the statistical analysis presents new methods to quantify and describe biophysical dynamics.

Keywords

laser speckle; optical vortices; singular optics; light scattering; dynamics

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