Skip to main content

Comparative assessment of three algorithms to control a deformable mirror for an adaptive optics system with no wavefront sensor

Nasiri-Avanaki, M.R. and Sarmadi, H. and Meadway, A. and Podoleanu, A.Gh. and Hojjatoleslami, S.A. (2011) Comparative assessment of three algorithms to control a deformable mirror for an adaptive optics system with no wavefront sensor. In: Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XVIII. Proceedings of SPIE . SPIE. ISBN 978-0-8194-8441-3. (doi:10.1117/12.875457) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1117/12.875457

Abstract

The images obtained from confocal imaging systems present less resolution than the theoretical limit due to imperfection of the optical components and their arrangement. This imperfection deteriorates the wavefront and introduces aberrations to the optical system. Adaptive optics (AO) systems composed of a wavefront sensor (WFS) and a deformable mirror represent the most used solution to this problem. Such adaptive optics systems are expensive. In addition, in microscopy, WFSs cannot be used due to stray reflections in the system and high aberrations introduced by the specimen. For these reasons, sensor-less AO systems have been developed to control the deformable mirror (DM) using an optimization algorithm in an iterative manner. At each iteration, the algorithm produces a new set of voltage and sends it to the mirror so as to optimize its shape, in such a way, as to maximize the strength of the photodetector current in the imaging system. In this paper the results of the application of three optimization techniques in the sensor-less AO are compared. The three optimization techniques are simulated annealing (SA), genetic algorithm (GA) and particle swarm optimization (PSO). SA and GA have been previously implemented and PSO is explained in this paper.

Item Type: Book section
DOI/Identification number: 10.1117/12.875457
Uncontrolled keywords: Aberration correction, Genetic algorithm, Particle swarm optimization, Simulated annealing algorithm, Aberration correction, Adaptive optics systems, Comparative assessment, Confocal imaging, Deformable mirrors, Optical components, Optimization algorithms, Optimization techniques, Particle swarm, Photodetector currents, Sensorless, Simulated annealing algorithm, Stray reflections, Theoretical limits, Wave front sensors, Adaptive control systems, Deformation, Electric appliances, Genetic algorithms, Geometrical optics, Image acquisition, Imaging systems, Mirrors, Optical systems, Optoelectronic devices, Particle swarm optimization (PSO), Sensors, Three dimensional, Wavefronts, Simulated annealing
Subjects: Q Science > QC Physics > QC355 Optics
Divisions: Faculties > Sciences > School of Physical Sciences > Applied Optics Group
Depositing User: Giles Tarver
Date Deposited: 16 Jul 2015 13:46 UTC
Last Modified: 26 Jul 2019 10:54 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/49413 (The current URI for this page, for reference purposes)
  • Depositors only (login required):