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Cooled Stacked-Actuator Deformable Mirror for Compensation for Phase Fluctuations in a Turbulent Atmosphere

Abstract—A wavefront corrector has been designed in the form of a cooled stacked-actuator deformable mirror for the correction of aberrations of laser radiation propagating through the turbulent atmosphere. The main parameters of this mirror are theoretically estimated. A technique for cooling the reflecting surface of the wavefront corrector through piezo actuators is suggested and experimentally tested. The main parameters of the deformable mirror are measured: the initial shape of the surface, the response functions of the actuators, the mirror stroke, and the frequency-amplitude characteristic of optical surface.

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Funding

This work was supported by the Russian Science Foundation (grant nos. 19-19-00706 (calculation of actuators), 20-69-46064 (study of thermal deformations of a mirror), and 20-19-00597 (study of the main characteristics of the corrector)).

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Correspondence to A. V. Kudryashov.

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Translated by O. Ponomareva

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Toporovsky, V.V., Kudryashov, A.V., Samarkin, V.V. et al. Cooled Stacked-Actuator Deformable Mirror for Compensation for Phase Fluctuations in a Turbulent Atmosphere. Atmos Ocean Opt 33, 584–590 (2020). https://doi.org/10.1134/S102485602006024X

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  • DOI: https://doi.org/10.1134/S102485602006024X

Keywords:

  • adaptive optics
  • wavefront corrector
  • deformable mirror
  • high-power laser radiation