Sensorless adaptive optics system based on image second moment measurements

Conference paper (2016)

Authors

T.E. Agbana Team Raf Van de Plas - Mechanical, Maritime and Materials Engineering
H. Yang Huaihai Institute of Technology
O.A. Soloviev ITMO University, Flexible Optical B.V., Team Raf Van de Plas - Mechanical, Maritime and Materials Engineering
Gleb Vdovin Team Raf Van de Plas - Mechanical, Maritime and Materials Engineering , Flexible Optical B.V., ITMO University
M.H.G. Verhaegen Team Raf Van de Plas - Mechanical, Maritime and Materials Engineering
Research Group
Team Raf Van de Plas (Mechanical, Maritime and Materials Engineering) (TU Delft)
Copyright: © 2016 T.E. Agbana, H. Yang, O.A. Soloviev, Gleb Vdovin, M.H.G. Verhaegen
DOI: https://doi.org/10.1117/12.2227551
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Published Date

2016

Language

English

Reuse Rights

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Faculty

Mechanical, Maritime and Materials Engineering

Department

Delft Center for Systems and Control

Research Group

Team Raf Van de Plas

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.

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