Wide-aperture deformable mirror for correcting and improving focusing of multi-petawatt Ti:Sa laser beam

Vladimir Toporovsky; Vadim Samarkin; Alexis Kudryashov; Alexander Alexandrov; Ilya Galaktionov; Alexander Nikitin; Alexey Rukosuev; Julia Sheldakova

doi:10.1117/12.2614522

4 March 2022 Wide-aperture deformable mirror for correcting and improving focusing of multi-petawatt Ti:Sa laser beam

Vladimir Toporovsky, Vadim Samarkin, Alexis Kudryashov, Alexander Alexandrov, Ilya Galaktionov, Alexander Nikitin, Alexey Rukosuev, Julia Sheldakova

Author Affiliations +

Proceedings Volume 11987, Laser Resonators, Microresonators, and Beam Control XXIV; 119870F (2022) https://doi.org/10.1117/12.2614522
Event: SPIE LASE, 2022, San Francisco, California, United States

Abstract

A bimorph deformable mirror with a diameter of 320 mm, including 127 control electrodes, has been developed and investigated. The flatness of the initial surface of the mirror RMS = 0.16 μm was achieved due to mechanical adjustment in the system of fixing the mirror substrate in the frame. An adaptive system with deformable mirrors and a ShackHartmann-type wavefront sensor was installed in a 4.2 PW Ti: Sa laser. Correction of the wavefront made it possible to obtain a record radiation intensity in the focusing plane of 1.1x10²³ W/cm², while the Strehl ratio was 0.84.

Conference Presentation

Citation Download Citation

Vladimir Toporovsky, Vadim Samarkin, Alexis Kudryashov, Alexander Alexandrov, Ilya Galaktionov, Alexander Nikitin, Alexey Rukosuev, and Julia Sheldakova "Wide-aperture deformable mirror for correcting and improving focusing of multi-petawatt Ti:Sa laser beam", Proc. SPIE 11987, Laser Resonators, Microresonators, and Beam Control XXIV, 119870F (4 March 2022); https://doi.org/10.1117/12.2614522

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