Exploring advanced optical configurations for high-resolution tomographic volumetric additive manufacturing

Tomographic volumetric additive manufacturing (T-VAM) is a fast-growing 3D printing technology, inspired by computed tomography (CT), that solidifies entire objects within seconds by projecting light patterns into a photosensitive liquid. While mathematically well established by foundations of CT, practical systems face optical and engineering trade-offs, especially in achieving fine resolution. Conventional diffracting optics struggle to achieve the required large depths-of-focus, limiting accuracy when compared to traditional 3D printing. We propose using non-diffracting beams, such as Bessel and optical pin beams, which offer extended propagation and self-healing, while maintaining a very fine beam waist. We analyze their suitability for T-VAM and demonstrate initial results highlighting their potential to enhance resolution.