Fig. 1. Schematic diagram of aperture method

Fig. 2. Photographs of aperture stops and near-fields with beam-intensity profiles^[15]. (a) Stop with a sharp edge; (b) shapes of the serrations are rectangular; (c) shapes of the serrations are triangular; (d) shapes of the serrations are super-Gaussian profiled

Fig. 3. Laser beam shaping based on LC-SLM. (a) Reflective LC-SLM shaping system^[25]; (b) spectral shapes of Gaussian, triangular, flat, and inverted triangles^[20]; (c) transmission LC-SLM shaping system^[22]; (d) shaping system and results of double layer LC-SLM^[24]

Fig. 4. Field mapper concept map^[27]

Fig. 5. Phase output plane intensity distribution. (a) Improved G-S algorithm; (b) traditional G-S algorithm ^[27]; (c) machinelearning algorithms ^[40]

Fig. 6. Classification of aspheric lens groups. (a) Two types of aspherical lens groups ^[52];(b) flat top distribution of output light at different propagation distances (D is propagation distance) ^[54]; (c) meridian section curve of Kepler type aspherical mirror ^[55]

Fig. 7. Birefringent element group shaping. (a) Radial birefringent element (RBE) laser system^［60］; (b) 2D and 3D views of the output near-field spot at maximum energy ^[60]; (c) birefringent laser pulse shaper with N crystals^[61]

Fig. 8. Structure diagram of multi aperture beam focusing system

Fig. 9. Micromirror array shaping system. (a) System diagram and shaped light field distribution of single and double micromirror arrays^[70]; (b) DMD beam shaping system^[75]; (c) one-dimensional, two-dimensional, and three-dimensional distribution of DMD shaping spot^[75]

Fig. 10. RPP beam shaping application^[79]. (a) PHELIX laser system based on RPP; (b) far-field beam intensity distribution (left image with RPP, right image without RPP)