title: Correction of vortex laser beam in a closed-loop adaptive system with bimorph mirror.
abstract: 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.
authors: Russian Federal Nuclear Center-VNIIEF, Mira Avenue 37, Sarov, N. Novgorod Region, Russia. starikov@otd13.vniief.ru
authors: F A
authors: FA
authors: Starikov
authors: G G
authors: GG
authors: Kochemasov
authors: M O
authors: MO
authors: Koltygin
authors: S M
authors: SM
authors: Kulikov
authors: A N
authors: AN
authors: Manachinsky
authors: N V
authors: NV
authors: Maslov
authors: S A
authors: SA
authors: Sukharev
authors: V P
authors: VP
authors: Aksenov
authors: I V
authors: IV
authors: Izmailov
authors: F Yu
authors: FY
authors: Kanev
authors: V V
authors: VV
authors: Atuchin
authors: I S
authors: IS
authors: Soldatenkov