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 sp...

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Published inOptics letters Vol. 34; no. 15; p. 2264
Main Authors Starikov, F A, Kochemasov, G G, Koltygin, M O, Kulikov, S M, Manachinsky, A N, Maslov, N V, Sukharev, S A, Aksenov, V P, Izmailov, I V, Kanev, F Yu, Atuchin, V V, Soldatenkov, I S
Format Journal Article
LanguageEnglish
Published United States 01.08.2009
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Summary: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.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.34.002264