Compact diode laser-based system for multi-photon polymerization with conventional resins

In this work we demonstrate the capabilities of our diode laser based Multi-Photon Polymerization (MPP) system, which aims at significantly reducing the required investment compared to available machines. While currently available systems rely on ultra short optical pulses from fibre lasers or titanium Sapphire lasers, we employ monolithically mode-locked diode lasers at a repetition rate of 6 GHz and emission wavelength around 780 nm to induce the polymerization process. These lasers allow for direct switching of the gain current and do therefore not require additional fast shutters. Overall, this results in a cost effective and compact machine that can work with conventional resins for MPP without any further adaption to our system. We will introduce our system, show the properties of the used diode lasers and demonstrate the manufacturing capabilities.