Abstract
We discuss the use of Liquid Crystal Phase Modulators (LCPM) as a repeatable test source for use with adaptive optics systems. LCPMs have the potential to induce controlled, repeatable, dynamic aberrations into optical system at low cost, low complexity, and high flexibility. Since they are programmable, and can be operate as transmissive elements, they can easily be inserted into the optical path of an adaptive optics system and used to generate a disturbance test source. Laboratory experiments with a Meadowlark liquid crystal phase modulator are presented.
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