Heidelberg 2015 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 66: Photonics I
Q 66.4: Talk
Friday, March 27, 2015, 12:00–12:15, B/gHS
Fabrication and characterization of 3D direct laser written structures using 515 nm and 780 nm — •Anika Trautmann1,2, Ralf Hellmann1, and Thomas Walther2 — 1Hochschule Aschaffenburg, Arbeitsgruppe für Angewandte Lasertechnik und Photonik, Würzburger Straße 45, 64743 Aschaffenburg — 2Technische Universität Darmstadt, Institut für Angewandte Physik, Laser- und Quantenoptik, Schlossgartenstraße 7, 64289 Darmstadt
Two-photon polymerization offers the possibility to produce user-defined 3D structures with great precision from a micro- to nanometer scale. Commonly, ultra-short pulsed lasers in the near infrared spectral region are employed for this process. Using smaller wavelengths promises even higher resolutions. We present results of a comparative study of laser direct writing with focus on the achievable voxel and feature size using a 515 nm and a 780 nm femtosecond laser. In conjunction with the calculated cross-sections of the two photon polymerization we evaluate the potential of the laser direct writing process for the fabrication of medical product. Finally, we present possibilities to further improve the capabilities of the applied optical setup by implementing beam shaping optics.