1985
DOI: 10.1364/josaa.2.001411
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Rotationally invariant correlation filtering

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Cited by 44 publications
(3 citation statements)
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“…Usually, a single OAM beam can be obtained by introducing a phase-only transmission element of known as circular harmonic 17 or angular harmonic 18 . The collinearly superimposed multiple OAM beams can be generated if an element comprising multiple circular harmonics is able to be designed.…”
Section: Methodsmentioning
confidence: 99%
“…Usually, a single OAM beam can be obtained by introducing a phase-only transmission element of known as circular harmonic 17 or angular harmonic 18 . The collinearly superimposed multiple OAM beams can be generated if an element comprising multiple circular harmonics is able to be designed.…”
Section: Methodsmentioning
confidence: 99%
“…We can also associate an energy to each angular harmonic like [5] Em=(27T) FIfm(r)I2rdr, (3) and consequently, the total energy of an image can be written as w 2rz E= I fm(r, 0)1 2 r dr dB=YEm.…”
Section: Introductionmentioning
confidence: 99%
“…Usually a single helical mode is generated by an element with a phase-only transmission exp( ) ilθ called circular harmonic [139] or angular harmonic [140]. charge [141], which means an azimuthally dependent phase-only element producing a multi-helix beam will consist of infinite angular harmonics.…”
Section: Description Of the Design Problemmentioning
confidence: 99%