Sensorless adaptive optics system based on image second moment measurements

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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.
Original languageEnglish
Title of host publicationProceedings of SPIE
Subtitle of host publicationOptics, Photonics and Digital Technologies for Imaging Applications IV
EditorsPeter Schelkens, Touradj Ebrahimi, Gabriel Cristóbal, Frédéric Truchetet, Pasi Saarikko
Place of PublicationBellingham, WA, USA
PublisherSPIE
Number of pages9
Volume9896
ISBN (Print)978-1-510601413
DOIs
Publication statusPublished - 2016
EventOptics, Photonics and Digital Technologies for Imaging Applications IV - Brussels, Belgium
Duration: 5 Apr 20166 Apr 2016

Publication series

NameProceedings of SPIE
Volume9896
ISSN (Electronic)1605-7422

Conference

ConferenceOptics, Photonics and Digital Technologies for Imaging Applications IV
CountryBelgium
CityBrussels
Period5/04/166/04/16

Keywords

  • wavefront sensorless adaptive optics
  • experimental results
  • static aberration
  • microscopic imaging system

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    Cite this

    Agbana, T., Yang, H., Soloviev, O., Vdovine, G., & Verhaegen, M. (2016). Sensorless adaptive optics system based on image second moment measurements. In P. Schelkens, T. Ebrahimi, G. Cristóbal, F. Truchetet, & P. Saarikko (Eds.), Proceedings of SPIE: Optics, Photonics and Digital Technologies for Imaging Applications IV (Vol. 9896). [989609] (Proceedings of SPIE; Vol. 9896). SPIE. https://doi.org/10.1117/12.2227551