A. N. Manachinsky scite author profile

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.

show abstract

Correction of vortex laser beam in a closed-loop adaptive system with bimorph mirror

et al. 2009

The phase correction of a vortex laser beam is undertaken in the closed-loop adaptive system including a Hartmann-Shack wavefront sensor with singular reconstruction technique and a bimorph piezoceramic mirror. After correction the vortex doughnutlike beam is focused into a beam with bright axial spot that considerably increases the Strehl ratio and optical system resolution. Since the phase break cannot be exactly reproduced on the flexible mirror surface, off-axis vortices appear in the far field at the beam periphery.

show abstract

Phase correction of laser radiation with the use of adaptive optical systems at the Russian Federal Nuclear Center—Institute of Experimental Physics

Гаранин

Manachinsky

Optoelectron.Instrument.Proc.

et al. 2012

Wave front sensing of an optical vortex and its correction in the close-loop adaptive system with bimorph mirror

Starikov¹,

Aksenov²,

et al. 2007

Wave front sensing of an optical vortex

Aksenov

Izmaǐlov

et al. 2006

Wavefront registration of an optical vortex generated with the help of spiral phase plates

Кочемасов

et al. 2005

Correction of vortex laser beams in a closed-loop adaptive system with bimorph mirror

Starikov¹,

Aksenov

et al. 2008

Generation of optical vortex for an adaptive optical system for phase correction of laser beams with wave front dislocations

Dolgopolov

et al. 2004