Open AccessMeasurement of vortex spectrum in a purely degenerate vortices array
Author(s) -
Mikhail Bretsko,
Yana Akimova
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1400/6/066009
Subject(s) - degenerate energy levels , amplitude , vortex , square (algebra) , sign (mathematics) , optical vortex , physics , beam (structure) , decimal , phase (matter) , spectrum (functional analysis) , intensity (physics) , optics , quantum mechanics , mathematics , mathematical analysis , geometry , mechanics , arithmetic
The article presents a new method for determining the basic characteristics (square of amplitude and initial phase) of purely degenerate arrays of optical vortices using intensity moments. Under purely degenerate arrays, a complex beam is assumed, in which the magnitude of the square of the amplitude of the vortices, opposite in sign of the charge, is equal, and the phases take only two values 0 and π . When the frequency parameter changes in hundredths of decimal places, the internal structure of the complex beam can be significantly changed, which is well reflected by the results obtained.