Large-aperture adaptive optical system for correcting wavefront distortions of a petawatt Ti : sapphire laser beam

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

doi:10.1070/qel17989

Cited by 13 publications

(6 citation statements)

References 32 publications

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“…This problem has been studied for more than a dozen years, yet has not lost its relevance. The technology for increasing the efficiency of laser radiation transmission to the receiver includes two main components: high-quality efficient single-mode laser radiation sources and adaptive optical systems for correcting for wavefront aberrations [37,38]. In this research, we will concentrate on the second component.…”

Section: Introductionmentioning

confidence: 99%

Atmospheric turbulence generator: software and hardware implementation of Kolmogorov phase screen simulation system

Galaktionov,

Sheldakova,

Toporovsky

et al. 2024

Laser Resonators, Microresonators, and Beam Control XXVI

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Atmospheric turbulence causes refractive index fluctuations that introduce extra distortions to the wavefront of the propagated radiation. It degrades the resolution of the telescope for imaging applications and reduces the radiation power density in focusing applications. One of the possible ways of research the impact of the turbulence is to numerically simulate the spectrum of refractive index fluctuations, to reproduce it using a wavefront corrector and to measure the resultant wavefront using a Shack-Hartmann sensor. In this paper, we developed turbulence simulator software that generates the sequence of phase screens with Kolmogorov spectra. We reconstructed the generated set of phase screens using a stacked-actuator deformable mirror.

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Section: Introductionmentioning

confidence: 99%

Atmospheric turbulence generator: software and hardware implementation of Kolmogorov phase screen simulation system

Galaktionov,

Sheldakova,

Toporovsky

et al. 2024

Laser Resonators, Microresonators, and Beam Control XXVI

View full text Add to dashboard Cite

show abstract

“…This problem has been studied for more than a dozen years, yet has not lost its relevance. The technology for increasing the efficiency of laser radiation transmission to the receiver includes two main components: high-quality efficient single-mode laser radiation sources and adaptive optical systems for correcting for wavefront aberrations [38,39]. In this research, we will concentrate on the second component.…”

Section: Introductionmentioning

confidence: 99%

Wide-aperture multichannel Shack-Hartmann sensor for multispectral wavefront measurements

Galaktionov,

Nikitin,

Sheldakova

et al. 2024

Laser Resonators, Microresonators, and Beam Control XXVI

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A multispectral wavefront sensor can be used to perform a single-shot spatio-temporal characterization of a laser pulse. In order to measure the spatio-spectral electric field, a laser pulse can be spectrally modulated, separated and measured by a wavefront sensor. In order to simplify the experimental setup and hardware control, the single wavefront sensor can be used. In this research we discuss the development of the multi-channel wide-aperture high-resolution Shack-Hartmann sensor for multispectral wavefront sensing. The whole sensor area of 15×15 mm was divided into 4 logical apertures, each for separate laser beam. The development and calibration procedure are described. The wavefront sensor control software is developed and tested.

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Section: Introductionmentioning

confidence: 99%

Atmospheric Turbulence with Kolmogorov Spectra: Software Simulation, Real-Time Reconstruction and Compensation by Means of Adaptive Optical System with Bimorph and Stacked-Actuator Deformable Mirrors

Galaktionov,

Sheldakova,

Samarkin

et al. 2023

Photonics

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Atmospheric turbulence causes refractive index fluctuations, which in turn introduce extra distortions to the wavefront of the propagated radiation. It ultimately degrades telescope resolution (in imaging applications) and reduces radiation power density (in focusing applications). One of the possible ways of researching the impact of turbulence is to numerically simulate the spectrum of refractive index fluctuations, to reproduce it using a wavefront corrector and to measure the resultant wavefront using, for example, a Shack–Hartmann sensor. In this paper, we developed turbulence simulator software that generates phase screens with Kolmogorov spectra. We reconstructed the generated set of phase screens using a stacked-actuator deformable mirror and then compensated for the introduced wavefront distortions using a bimorph deformable mirror. The residual amplitude of the wavefront reconstructed by the 19-channel stacked-actuator mirror was 0.26 λ, while the residual amplitude of the wavefront compensated for by the 32-channel bimorph mirror was 0.08 λ.

show abstract

Large-aperture adaptive optical system for correcting wavefront distortions of a petawatt Ti : sapphire laser beam

Cited by 13 publications

References 32 publications

Atmospheric turbulence generator: software and hardware implementation of Kolmogorov phase screen simulation system

Atmospheric turbulence generator: software and hardware implementation of Kolmogorov phase screen simulation system

Wide-aperture multichannel Shack-Hartmann sensor for multispectral wavefront measurements

Atmospheric Turbulence with Kolmogorov Spectra: Software Simulation, Real-Time Reconstruction and Compensation by Means of Adaptive Optical System with Bimorph and Stacked-Actuator Deformable Mirrors

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