Wave optical model for tomographic volumetric additive manufacturing

• DOI: 10.48550/arxiv.2402.06283
• Publication Date: 2024-02-09
• Authors: Felix Wechsler; Carlo Gigli; Jorge Madrid‐Wolff; Christophe Moser
• Keywords: Tomographic reconstruction

Tomographic Volumetric Additive Manufacturing (TVAM) allows printing of mesoscopic objects within seconds or minutes. patterns are illuminated onto a rotating glass vial which contains photosensitive resin. Current pattern optimization is based on ray optical assumption ultimately leads to limited resolution around $20\mu\textrm{m}$ and varying throughout the volume 3D object. In this work, we introduce rigorous wave-based amplitude scheme for TVAM shows that high-resolution theoretically possible over full volume. The wave approach an efficient angular spectrum method plane waves with custom written memory gradients realistic volumes such as $(100\mu\textrm{m})^3$ $(10\textrm{mm})^3$ $550^3$ voxels 600 angles. Our simulations show ray-optics start produce artifacts when desired features below more importantly, modulated can reach micrometer optimizing using model.