Wavefront correction with a ferrofluid deformable mirror: experimental results and recent developments
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🌌 astro-ph
physics.ins-det
keywords
deformablemirrorwavefrontdevelopmentsmicronsmirrorsrecentresponse
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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.
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