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Proceedings Paper

Sensorless adaptive optics system based on image second moment measurements
Author(s): Temitope E. Agbana; Huizhen Yang; Oleg Soloviev; Gleb Vdovin; Michel Verhaegen
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Paper Abstract

This paper presents experimental results of a static aberration control algorithm based on the linear relation be- tween mean square of the aberration gradient and the second moment of point spread function for the generation of control signal input for a deformable mirror (DM). Results presented in the work of Yang et al.1 suggested a good feasibility of the method for correction of static aberration for point and extended sources. However, a practical realisation of the algorithm has not been demonstrated. The goal of this article is to check the method experimentally in the real conditions of the present noise, finite dynamic range of the imaging camera, and system misalignments. The experiments have shown strong dependence of the linearity of the relationship on image noise and overall image intensity, which depends on the aberration level. Also, the restoration capability and the rate of convergence of the AO system for aberrations generated by the deformable mirror are experi- mentally investigated. The presented approach as well as the experimental results finds practical application in compensation of static aberration in adaptive microscopic imaging system.

Paper Details

Date Published: 29 April 2016
PDF: 9 pages
Proc. SPIE 9896, Optics, Photonics and Digital Technologies for Imaging Applications IV, 989609 (29 April 2016); doi: 10.1117/12.2227551
Show Author Affiliations
Temitope E. Agbana, Technische Univ. Delft (Netherlands)
Huizhen Yang, Huaihai Institute of Technology (China)
Oleg Soloviev, Technische Univ. Delft (Netherlands)
Flexible Optical B.V. (Netherlands)
ITMO Univ. (Russian Federation)
Gleb Vdovin, Technische Univ. Delft (Netherlands)
Flexible Optical B.V. (Netherlands)
ITMO Univ. (Russian Federation)
Michel Verhaegen, Technische Univ. Delft (Netherlands)

Published in SPIE Proceedings Vol. 9896:
Optics, Photonics and Digital Technologies for Imaging Applications IV
Peter Schelkens; Touradj Ebrahimi; Gabriel Cristóbal; Frédéric Truchetet; Pasi Saarikko, Editor(s)

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