Abstract
The deformable mirror under development is a prototype of a large aperture adaptive optics for high power lasers. Its bimorph and lightweight structure consists of a composite core, electrodes, a piezo-ceramic layer and a reflective layer. A double exposure method and a real time holographic interferometry method are used for measuring deformations of the mirror sample induced by the active layer. Various piezo materials have been tested for its suitability, namely their hysteresis.
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