Heidelberg 2015 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 15: Poster: Quantum Optics and Photonics I

Q 15.84: Poster

Montag, 23. März 2015, 17:00–19:00, C/Foyer

Coupled polymer waveguide arrays by direct laser writing — •Christina Joerg1, Michael Renner1, and Georg von Freymann1,21Department of Physics and State Research Center OPTIMAS, University of Kaiserslautern, Erwin-Schroedinger-Str. 56, 67663, Kaiserslautern, Germany — 2Fraunhofer-Institute for Physical Measurement Techniques IPM, Erwin-Schroedinger-Str. 56, 67663, Kaiserslautern, Germany

Our goal is to build a compact photonic quantum simulator for the electronic properties of, e.g., graphen. As the propagation distance z in the paraxial Helmholtz equation corresponds to time in the Schrödinger equation one can simulate quantum-optical effects by looking at the propagation of light in coupled waveguides.

To do so we fabricate single-mode waveguide arrays on a micrometer scale via direct laser writing (two photon absorption) in negative photoresist. After writing the inverse of the waveguide arrays the sample is developed and then infiltrated. By choosing appropriate infiltration materials the coupling constant between waveguides can be tuned. For a start we use soft-baked SU8, corresponding to a contrast in the refraction index of 0.03 and coupling lengths of about 50um.

Writing samples of different height we can observe the light pattern evolution at the output facet when focusing a laser beam onto the input facet of the waveguide sample.

First experimental results and numerical calculations are presented.

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DPG-Physik > DPG-Verhandlungen > 2015 > Heidelberg