Wavefront correction with a ferrofluid deformable mirror: experimental results and recent developments
Astrophysics
2009-11-13 v1 Instrumentation and Detectors
Abstract
We present the research status of a deformable mirror made of a magnetic liquid whose surface is actuated by a triangular array of small current carrying coils. We demonstrate that the mirror can correct a 11 microns low order aberrated wavefront to a residual RMS wavefront error 0.05 microns. Recent developments show that these deformable mirrors can reach a frequency response of several hundred hertz. A new method for linearizing the response of these mirrors is also presented.
Cite
@article{arxiv.0807.2397,
title = {Wavefront correction with a ferrofluid deformable mirror: experimental results and recent developments},
author = {Denis Brousseau and Ermanno F. Borra and Simon Thibaul and Anna M. Ritcey and Jocelyn Parent and Omar Seddiki and Jean-Philippe Dery and Luc Faucher and Julien Vassallo and Azadeh Naderian},
journal= {arXiv preprint arXiv:0807.2397},
year = {2009}
}
Comments
To appear in "Ground-based and Airborne Instrumentation for Astronomy II" SPIE conference, Marseille, 23-28 June 2008