A prototype electromagnetically deformable mirror

Augousti, A.T., Greatwood, M. and Mason, J. (1998) A prototype electromagnetically deformable mirror. In: Institute of Physics (Great Britain). Applied Optics Division. 5th Divisional Conference; 16-19 March 1998, Brighton, England. ISBN 0750304561


Early work on the design and construction of a deformable mirror based on a novel actuation method is reported. The actuation is effected via the Lorentz force which acts on a current in the region of a transverse magnetic field. The mirror is characterised with respect to focal length variations, which are of the order of 30% for a current of approximately SA in a field of 0.4T. Aberrations in the system are discussed, and suggested improvements are offered.

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