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