Paper 14093-50
Paper 14093-50
High efficiency light engine for Holographic Tomographic Volumetric Additive Manufacturing using Phase Light Modulator (PLM)
15 April 2026 • 14:00 - 14:15 CEST | Curie A (Niveau/Level 1)
Abstract
We present a novel volumetric 3D printing platform using a phase light modulator (PLM) to enhance efficiency in holographic tomographic volumetric additive manufacturing (Holographic TVAM). Unlike traditional amplitude-based systems, PLM-based phase encoding boosts laser power efficiency 70-fold. Combined with speckle reduction, this enables rapid fabrication of complex 3D structures across scales (microns to centimeters) and materials including cell-laden hydrogels (1M cells/mL). We also introduce gelatin Thiol/Norbornene as a printable resin, achieving large-scale prints (~ 3.8 × 3.8 × 4 cm3) in under 2 minutes using a low-power 150 mW UV laser diode. This approach opens new possibilities for scalable, high-resolution light-based 3D printing.
Presenter
Maria Isabel Alvarez Castaño
EPFL (Switzerland)
Maria Isabel Álvarez-Castaño is a Physicist Engineer and Magister of Science – Physics from the National University of Colombia. Currently, she is doing her Ph.D. in Photonics at The École Polytechnique Fédérale de Lausanne (EPFL) in the Laboratory of Applied Photonics Devices with Professor Christophe Moser. She has experience in Spatial Light Modulators (SLMs), optical tweezers, and optical telecommunications. Her current interest is using SLMs applied to advanced additive manufacturing.