Berlin 2014 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 30: Poster: Photonics, laser development and applications, ultrashort laser pulses, quantum effects
Q 30.61: Poster
Dienstag, 18. März 2014, 16:30–18:30, Spree-Palais
Direct writing of waveguides in polymers with a fs laser — •Welm Pätzold1, Bernhard Kreipe1, Moritz Emons1, Carsten Reinhardt2, Boris Chichkov2, and Uwe Morgner1,2 — 1Institut für Quantenoptik, Leibniz Universität Hannover, 30167 Hannover — 2Laserzentrum Hannover e.V., 30419 Hannover
Current advances in the micromachining of waveguides in polymers with fs laser radiation are presented. A laser beam is focused into a fully crosslinked polymer sample to reach intensities for multi-photon absorption. After cooling of the localizes plasma a permanent structural change remains. The goal is to achieve an increase in refractive index that can act as a Type I waveguide. An alternative approach is the formation of Type II waveguides where the light is guided inbetween multiple modified areas.
This method of direct material modification can create virtually arbitrary 3D-paths within a bulk material and is insensitive to the surrounding environment. In the future it shall be used to create photonic structures like e.g. couplers or beam splitters on polymer foils.