Paper 13354-12
Paper 13354-12
Parallelized two-step-absorption 3D laser nanoprinting via computational holography using a digital micromirror device (Invited Paper)
28 January 2025 • 4:35 PM - 5:00 PM PST | Moscone South, Room 201 (Level 2)
Abstract
Two-step-absorption 3D laser nanoprinting is an attractive alternative to its multi-photon-absorption counterpart as it allows for using compact and cost-efficient continuous-wave laser sources. Given that single-focus laser powers are typically below 1 mW, multi-focus parallelization is a viable approach to increase print speed while still relying on compact continuous-wave laser sources. We combine an established photoresist system for two-step-absorption 3D laser nanoprinting with a multi-focus approach based on binary holography. For this purpose, a digital micromirror device (DMD) is used as a beam-splitting and beam-steering device. This allows for the individual control of each laser focus within the print plane.
Presenter
Pascal Rietz
Karlsruher Institut für Technologie (Germany)
Pascal Rietz is a Ph.D. student in physics at the Karlsruhe Institute of Technology (KIT) in Germany. He is conducting his doctoral research in the group of Martin Wegener at both the Institute of Nanotechnology (INT) and the Institute of Applied Physics (APH) at KIT. Additionally, he is affiliated with the Cluster of Excellence “3D Matter Made to Order” (3DMM2O) and the HEiKA Graduate School on Functional Materials. After obtaining his Bachelor's and Master's degrees in physics from KIT in 2018 and 2020, respectively, he began his Ph.D. studies in 2021. His research focuses on advancing parallelization techniques for two-step absorption 3D laser micro- and nanoprinting.