Wide-aperture bimorph mirrors and the problem of the print-through" structure of the separated piezoplates
Samarkin V. V.1, Alexandrov A. G.1, Kumitskii P. M.1, Kudryashov A. V.1
1Sadovsky Institute of Geosphere Dynamics of Russian Academy of Sciences. Moscow, Russia
Email: kud@activeoptics.ru
The results of a study on the occurrence and compensation of the "print-through" effect on piezoceramic plates in wide-aperture bimorph mirrors of a combined type are presented. It is shown that the use of the technique of "training" the piezoelectric plates by applying control voltages to the electrodes according to a special algorithm can significantly improve the initial flatness of the corrector. This allows to apply this type of flexible mirror in high-power laser systems, including those designed for laser fusion. Keywords: deformable mirror, bimorph electrode, piezoceramic actuator.
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