Wavefront reconstruction of an optical vortex by a Hartmann-Shack sensor.
Reconstruction the phase front of a vortex laser beam is conducted by use of a Hartmann-Shack wavefront sensor. The vortex beam in the form of the Laguerre-Gaussian LG(0)(1) mode is generated with the help of a spiral phase plate. The new reconstruction technique based on measured wavefront gradients allows one to restore the singular phase surface with good accuracy, whereas the conventional least-squares approach fails.
Starikov
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Russian Federal Nuclear Center-VNIIEF, Mira Avenue 37, Sarov, Nizhni Novgorod Region 607190, Russia. starikov@otd13.vniief.ru
Kochemasov
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Kulikov
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Manachinsky
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Maslov
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Ogorodnikov
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Sukharev
S A
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Aksenov
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Izmailov
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Kanev
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Atuchin
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Soldatenkov
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