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Detection of Vortex Sign for Scalar Speckle Fields
Mokhun I., Galushko Yu.

Chernivtsi University, 2 Kotsyubinsky St., Chernivtsi 12, 58012, Ukraine

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A technique is described for determining vortex sign in the scalar optical fields (including statistical ones) under conditions when it is impossible to use a regular reference beam. The elaborated approach is based on the shift-interferometry technique. The optimal conditions for identifying the vortices are formulated. The results of computer simulations and the corresponding experimental confirmation of our theoretical findings are presented.

Keywords: vortex, shift-interferometry, interference forklets, topological charge

PACS:  42.50.Ct
UDC : 535.44
Ukr. J. Phys. Opt. 9 247-255 
doi: 10.3116/16091833/9/4/247/2008
Received: 05.09.2008
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