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11 August 2022 Improvement of MRAF algorithm based on high energy efficiency for beam shaping
Hui Yu, Jiamei Li, Dawei Li, Qiong Zhou, Fengnian Lv, Xingqiang Lu
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Proceedings Volume 12307, Second Optics Frontier Conference (OFS 2022); 1230705 (2022) https://doi.org/10.1117/12.2643562
Event: Second Optics Frontier Conference 2022, 2022, ONLINE, China
Abstract
To meet the specific needs or improve the system’s energy efficiency, it is necessary to integrate the beam into a specific intensity distribution beam. This paper establishes a set of rules based on the mixed-region amplitude freedom (MRAF) algorithm, and a beam shaping algorithm is proposed to calculate the intensity distribution by setting the energy efficiency. Simulation results show that compared with the traditional Gerchberg–Saxton (GS) algorithm, the convergence effect improved by one to two orders of magnitude after abandoning controlling a small part of the energy; compared with the MRAF algorithm, the energy efficiency converged to the preset target value, in addition, the energy efficiency is higher under the same convergence intensity. This algorithm provides a new path for shaping in femtosecond laser processing technology.
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Hui Yu, Jiamei Li, Dawei Li, Qiong Zhou, Fengnian Lv, and Xingqiang Lu "Improvement of MRAF algorithm based on high energy efficiency for beam shaping", Proc. SPIE 12307, Second Optics Frontier Conference (OFS 2022), 1230705 (11 August 2022); https://doi.org/10.1117/12.2643562
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KEYWORDS
Energy efficiency
Beam shaping
Laser applications
Fourier transforms
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