The ability to simulate atmospheric turbulence in the lab is a crucial partof testing and developing astronomical adaptive optics technology. We report onthe development of a technique for creating phase plates, which involves thestrategic application of clear acrylic paint onto a transparent substrate.Results of interferometric characterization of these plates is described andcompared to Kolmogorov statistics. The range of r0 (Fried's parameter) achievedthus far is 0.2 - 1.2 mm, with a Kolmogorov power law. These phase plates havebeen successfully used by the lab for Adaptive Optics at University ofCalifornia, Santa Cruz, in the Multi-Conjugate Adaptive Optics testbed, as partof the Villages (Visible Light Laser Guidestar Experiments) calibration system,and during integration and testing of the Gemini Planet Imager. This method hasproven to be an effective and low cost means to simulate turbulence. We are nowdistributing the plates to other members of the AO community.
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