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Suppressing low-order eigenmodes with local control for deformable mirrors

Heimsten, Rikard LU ; Owner-Petersen, Mette LU ; Ruppel, Thomas; MacMynowski, Douglas G. and Andersen, Torben LU (2012) In Optical Engineering 51(2).
Abstract
To improve the mechanical characteristics of actively controlled continuous faceplate deformable mirrors in adaptive optics, a strategy for reducing crosstalk between adjacent actuators and for suppressing low-order eigenmodes is proposed. The strategy can be seen as extending Saint-Venant's principle beyond the static case, for small local families of actuators. An analytic model is presented, from which we show the feasibility of the local control. Also, we demonstrate how eigenmodes and eigenfrequencies are affected by mirror parameters, such as thickness, diameter, Young's modulus, Poisson's ratio, and density. This analysis is used to evaluate the design strategy for a large deformable mirror, and how many actuators are needed within... (More)
To improve the mechanical characteristics of actively controlled continuous faceplate deformable mirrors in adaptive optics, a strategy for reducing crosstalk between adjacent actuators and for suppressing low-order eigenmodes is proposed. The strategy can be seen as extending Saint-Venant's principle beyond the static case, for small local families of actuators. An analytic model is presented, from which we show the feasibility of the local control. Also, we demonstrate how eigenmodes and eigenfrequencies are affected by mirror parameters, such as thickness, diameter, Young's modulus, Poisson's ratio, and density. This analysis is used to evaluate the design strategy for a large deformable mirror, and how many actuators are needed within a family. (c) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.51.2.026601] (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
distributed control, adaptive optics, large deformable mirror, dimensionless mode analysis
in
Optical Engineering
volume
51
issue
2
publisher
SPIE
external identifiers
  • wos:000302779500039
  • scopus:84871782780
ISSN
0091-3286
DOI
10.1117/1.OE.51.2.026601
language
English
LU publication?
yes
id
5ed7a34c-fd0c-41d5-ba93-3fea5604ae1a (old id 2571443)
date added to LUP
2012-06-04 11:22:24
date last changed
2017-01-01 05:23:37
@article{5ed7a34c-fd0c-41d5-ba93-3fea5604ae1a,
  abstract     = {To improve the mechanical characteristics of actively controlled continuous faceplate deformable mirrors in adaptive optics, a strategy for reducing crosstalk between adjacent actuators and for suppressing low-order eigenmodes is proposed. The strategy can be seen as extending Saint-Venant's principle beyond the static case, for small local families of actuators. An analytic model is presented, from which we show the feasibility of the local control. Also, we demonstrate how eigenmodes and eigenfrequencies are affected by mirror parameters, such as thickness, diameter, Young's modulus, Poisson's ratio, and density. This analysis is used to evaluate the design strategy for a large deformable mirror, and how many actuators are needed within a family. (c) 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). [DOI: 10.1117/1.OE.51.2.026601]},
  author       = {Heimsten, Rikard and Owner-Petersen, Mette and Ruppel, Thomas and MacMynowski, Douglas G. and Andersen, Torben},
  issn         = {0091-3286},
  keyword      = {distributed control,adaptive optics,large deformable mirror,dimensionless mode analysis},
  language     = {eng},
  number       = {2},
  publisher    = {SPIE},
  series       = {Optical Engineering},
  title        = {Suppressing low-order eigenmodes with local control for deformable mirrors},
  url          = {http://dx.doi.org/10.1117/1.OE.51.2.026601},
  volume       = {51},
  year         = {2012},
}