Generation of flattop beams from a distorted optical field by the wavefront shaping technique

PLUTO / PLUTO-2 Spatial Light Modulators
Adaptive Optics / Wavefront Control Beam Shaping / Beam Steering
Published on:
Authors: Hang Sun, Haoran Li, Ziyang Chen, Xiaoyan Wu, Guodong Liu, and Jixiong Pu
Abstract:

Uniform laser beams with controllable patterns are crucial for various applications, including laser processing and inertial confinement fusion. While some methods have been proposed to generate flattop beams, they often require complex optical systems that can become ineffective because of the misalignment of the system or the imperfection of optical elements. To overcome these issues, we utilized feedback-based wavefront shaping (FWS) technology to generate flattop beams with desired patterns from a disordered light. To solve the multi-goal optimization problem, we propose some modifications based on the Non-dominated Sorting Genetic Algorithm II (NSGA2) and successfully generate focal beams with a uniform intensity distribution and controllable beam shape from the disordered light field.

Restricted Access

Publication: Journal of the Optical Society of America A
Issue/Year: J. Opt. Soc. Am. A, 40, 1926-1932 (2023)
DOI: 10.1364/JOSAA.502993
Link: https://doi.org/10.1364/JOSAA.502993

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