19 August 2005 Optimized bimorph flexible mirrors for laser beam correction and shaping
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Abstract
In this paper a new algorithm of bimorph deformable mirror the best-suited electrodes shape and position determination is suggested. This algorithm is based on solving an inverse problem of defining the best electrodes position from the required phase distribution formation. The first part of the algorithm is an approximate determination of mirror electrodes position, which is based on linear dependence of electrical field in piezoceramics from laplasian of corresponding mirror deformation. Exact locating of the electrodes is the second part of the algorithm and is performed during iterative procedure. During the procedure relative root mean square deviation of computed mirror profile from the demanded one is minimized. To calculate mirror deformation on every iteration step we use a specially developed finite element model of the bimorph mirror. By using the developed algorithm, we demonstrate possibility to increase quality of reproducing various phase profiles, for example those, corresponding to human eye aberrations and even to form vortex beam.
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A. S. Sobolev, A. S. Sobolev, T. Yu. Cherezova, T. Yu. Cherezova, A. V. Kudryashov, A. V. Kudryashov, } "Optimized bimorph flexible mirrors for laser beam correction and shaping", Proc. SPIE 5876, Laser Beam Shaping VI, 58760F (19 August 2005); doi: 10.1117/12.626228; https://doi.org/10.1117/12.626228
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