Flat-top and doughnut-like laser beam profiles: an overview of the modified algorithm for converting the arbitrary shaped beam using phase only spatial light modulator

Ilya Galaktionov; Julia Sheldakova; Alexander Nikitin; Vladimir Toporovsky; Pavel Kuzmitsky; Alexis Kudryashov

doi:10.1117/12.3028201

1 October 2024 Flat-top and doughnut-like laser beam profiles: an overview of the modified algorithm for converting the arbitrary shaped beam using phase only spatial light modulator

Ilya Galaktionov, Julia Sheldakova, Alexander Nikitin, Vladimir Toporovsky, Pavel Kuzmitsky, Alexis Kudryashov

Author Affiliations +

Proceedings Volume 13130, Novel Optical Systems, Methods, and Applications XXVII; 131300J (2024) https://doi.org/10.1117/12.3028201
Event: Optical Engineering + Applications, 2024, San Diego, California, United States

Abstract

Laser beam shaping problem remains relevant for various applications of modern laser physics – from laser cutting of metals to wireless long-distance energy transmission. For example, the transformation of the original Gaussian profile into flat-top profile is necessary to improve the technology (material processing, holograms recording) while the doughnut-like profile ensures uniform temperature distribution on a target and increases the stability of various thermal processes, such as melting. To solve this problem the automated adaptive optical system with phase-only special light modulator and intensity analyzer are assembled and tested. The experimental results of the flat-top and doughnut-like intensity distributions formation are presented. We were able to concentrate ~60% and 75% of the initial beam energy for the doughnut-like and flat-top intensity distributions, correspondingly.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Ilya Galaktionov, Julia Sheldakova, Alexander Nikitin, Vladimir Toporovsky, Pavel Kuzmitsky, and Alexis Kudryashov "Flat-top and doughnut-like laser beam profiles: an overview of the modified algorithm for converting the arbitrary shaped beam using phase only spatial light modulator", Proc. SPIE 13130, Novel Optical Systems, Methods, and Applications XXVII, 131300J (1 October 2024); https://doi.org/10.1117/12.3028201

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KEYWORDS

Deformable mirrors

Spatial light modulators

Signal intensity

Wavefront sensors

Adaptive optics

Laser cutting

Phase distribution

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