Hamburg 2009 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 43: Ultrakurze Pulse: Anwendungen I
Q 43.5: Talk
Thursday, March 5, 2009, 11:45–12:00, VMP 6 HS-A
Double waveguide couplers produced by adaptive femtosecond writing — •Matthias Pospiech1, Moritz Emons1, Andy Steinmann1, Guido Palmer1, Uwe Morgner1,2, Roberto Osellame3, Nicola Bellini3, and Giulio Cerullo3 — 1Institut für Quantenoptik, Leibniz Universität Hannover, Deutschland — 2Laserzentrum Hannover e.V. — 3Istituto di Fotonica e Nanotecnologie - CNR, Dipartimento di Fisica - Politecnico di Milano
We report on a novel method to create waveguide coupler devices in fused silica by combining the technique of adaptive beam shaping with femtosecond laser writing. The method is based on a programmable phase modulator and a dynamic variation of the phase-pattern during the writing process. The major advantage is the possibility to create complex devices in a single sweep by simultaneously writing two or more waveguides with changing separation. The guiding properties and the coupling behavior between the waveguides are investigated.