Wavefront shaping enables precise control of light propagation through multimode fibers (MMFs), facilitating diffraction-limited focusing for applications such as high-resolution single-fiber imaging and high-power fiber amplifiers. In some applications, an alternative beam distribution such as a top hat or donut is desired instead of the inherent Gaussian distribution provided by typical. In this paper, we present a rapid beam-focusing method for multimode fiber (MMF) that integrates a Convolutional Neural Network (CNN) with a Spatial Light Modulator (SLM). While the theoretical intensity enhancement at the focal point is. Performance of various laser technologies like welding, metal sheet cutting based on the use of powerful multimode fiber lasers, fiber-coupled solid-state and diode lasers can be improved by manipulation of energy distribution perpendicular and along optical axis. 5-2 mm. High-power single-frequency multimode fiber amplifier with suppressed nonlinearity and focused output Stefan Rothe, Chun-Wei Chen, Peyman Ahmadi, KyeoReh Lee, Kabish Wisal, Mert Ercan, Nathan Vigne, A. Welding, cladding with millimetre scale working spots benefit from “inverse-Gauss” intensity profiles; performance of thick metal.
