Wavefront correction with a ferrofluid deformable mirror: experimental results and recent developments
2008; SPIE; Volume: 7015; Linguagem: Inglês
10.1117/12.787840
ISSN1996-756X
AutoresDenis Brousseau, E. F. Borra, Simon Thibault, Anna M. Ritcey, Jocelyn Parent, Omar Seddiki, Jean-Philippe Déry, Luc Faucher, Julien Vassallo, Azadeh Naderian,
Tópico(s)Characterization and Applications of Magnetic Nanoparticles
ResumoWe 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 μm low order aberrated wavefront to a residual RMS wavefront error 0.05 μm. 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.
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