Vortex analysis in dynamic speckle images.
Optical vortex analysis has become an important tool in optical metrology. It has been shown to be able to measure small displacements with up to nanometric precision. We analyze optical vortex behavior in dynamic speckle patterns with the boiling phenomenon. We first study translational patterns with boiling and we find the limitations of the optical vortex metrology. Pure boiling patterns are also evaluated and we find a quantitative descriptor for the activity. We also observe that vortices exhibit a Brownian motion in pure boiling patterns. Numerical and experimental results are shown.
Sendra
Gonzalo H
GH
Centro 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
Rabal
Héctor J
HJ
Arizaga
Ricardo
R
Trivi
Marcelo
M