Beyond the light intensity or intensity moments and measurements of the vortex spectrum in complex light beams
Volyar A.V., Bretsko M.V., AkimovaYa.E., Egorov Yu.A.

 

Physics and Technology Institute (Academic Unit) of V.I. Vernadsky Crimean Federal University, Academician Vernadsky 4, 295007, Simferopol, Russia

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Abstract:
The paper presents a new method for measuring the vortex spectrum (amplitude squares and initial phases) as well as the orbital angular momentum without cuts and splices of the wave front of a vortex array. Such an extension of the measurement capabilities of the combined beam properties is achieved by recording the intensity moments of the light beam as a whole without destroying its internal structure. The correlation coefficient between the initial intensity distribution and the intensity distribution taking into account the experimentally obtained vortex spectrum reaches 91%, which indicates the reliability of the presented method.

Keywords:
diffractive optics, image processing, optical vortices, orbital angular momentum, moments of intensity.

Citation:
Volyar AV, Bretsko MV, AkimovaYaE, Egorov YuA. Beyond the light intensity or intensity moments and measurements of the vortex spectrum in complex light beams. Computer Optics 2018; 41(1): 736-743. DOI: 10.18287/2412-6179-2017-42-5-736-743.

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