Wide-Aperture Bimorph Deformable Mirror for Beam Focusing in 4.2 PW Ti:Sa Laser

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

doi:10.3390/app12031144

Applied Sciences (Jan 2022)

Wide-Aperture Bimorph Deformable Mirror for Beam Focusing in 4.2 PW Ti:Sa Laser

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

Affiliations

Vadim Samarkin: M.A. Sadovsky Institute of Geosphere Dynamics (IDG RAS), Leninsky Prospect, 38, Bld. 1, 119334 Moscow, Russia
Alexander Alexandrov: M.A. Sadovsky Institute of Geosphere Dynamics (IDG RAS), Leninsky Prospect, 38, Bld. 1, 119334 Moscow, Russia
Ilya Galaktionov: M.A. Sadovsky Institute of Geosphere Dynamics (IDG RAS), Leninsky Prospect, 38, Bld. 1, 119334 Moscow, Russia
Alexis Kudryashov: M.A. Sadovsky Institute of Geosphere Dynamics (IDG RAS), Leninsky Prospect, 38, Bld. 1, 119334 Moscow, Russia
Alexander Nikitin: M.A. Sadovsky Institute of Geosphere Dynamics (IDG RAS), Leninsky Prospect, 38, Bld. 1, 119334 Moscow, Russia
Alexey Rukosuev: M.A. Sadovsky Institute of Geosphere Dynamics (IDG RAS), Leninsky Prospect, 38, Bld. 1, 119334 Moscow, Russia
Vladimir Toporovsky: M.A. Sadovsky Institute of Geosphere Dynamics (IDG RAS), Leninsky Prospect, 38, Bld. 1, 119334 Moscow, Russia
Julia Sheldakova: M.A. Sadovsky Institute of Geosphere Dynamics (IDG RAS), Leninsky Prospect, 38, Bld. 1, 119334 Moscow, Russia

DOI: https://doi.org/10.3390/app12031144
Journal volume & issue: Vol. 12, no. 3
p. 1144

Abstract

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The bimorph deformable mirror with a diameter of 320 mm, including 127 control electrodes, has been developed and tested. The flatness of the initial mirror surface of about 1 μm (P-V) was achieved by mechanically adjusting the mirror substrate fixed in the metal mount. To correct for the aberrations and improve the beam focusing in the petawatt Ti:Sa laser, the wide-aperture adaptive optical system with the deformable mirror and Shack–Hartmann wavefront sensor was developed. Correction of the wavefront aberrations in the 4.2 PW Ti:Sa laser using the adaptive system provided increases the intensity in the focusing plane to a value of 1.1 × 1023 W/cm2

Published in Applied Sciences

ISSN: 2076-3417 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Engineering (General). Civil engineering (General); Science: Biology (General); Science: Physics; Science: Chemistry
Website: http://www.mdpi.com/journal/applsci

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