A deformable mirror based on the principle of total internal reflection (TIR) of light from an electrostatically
deformed liquid-air interface was realized and used to perform closed-loop adaptive optical correction on a
collimated laser beam aberrated by a rotating phase disk. The liquid system was characterized including open- and
closed-loop frequency responses, determination of rise-times, the damping times of the liquid, and the
influence of liquid surface motion in the absence of external optical aberrations. The dynamic behavior of
the liquid was found to be dominated by gravity waves and the results of the experimental realization were
in good agreement with the predictions of the theory. A miniaturization of the system promises to eliminate
the dominant gravity waves and considerably reduce the errors introduced by ambient vibrations. Here we
explore the possibilities of such a micro mirror and establish the boundary conditions and requirements for its
realization.
Closed-loop adaptive optical correction using a deformable mirror based on the total internal reflection (TIR)
from an electrostatically deformed liquid-air interface was performed on a collimated beam of a HeNe-laser that
was aberrated by a rotating phase disk. The frequency response of the system was measured and the influence
of liquid surface motion in absence of external optical aberrations on the liquid mirror was characterized. The
performance of the AO system was determined for static and dynamic aberrations for various sets of system
parameters.
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