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2022•Unpublished venueRequires access

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

Open publisher page 2 citations

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.

About this research paper

What this paper is about

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.

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OpenAlex reports 2 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available 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.

Key concepts: Deformable mirror, Strehl ratio, Optics, Bimorph, Adaptive optics, Wavefront, Laser, Wavefront sensor

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Wide-aperture deformable mirror for correcting and improving focusing of multi-petawatt Ti:Sa laser beam — Research Paper | ScholarLens