Düsseldorf 2007 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 29: Poster Ultrakurze Lichtimpulse

Q 29.10: Poster

Dienstag, 20. März 2007, 16:30–18:30, Poster C

A flexible setup for high resolution femtosecond pulse shaping — •Jens Köhler, Cristian Sarpe-Tudoran, Matthias Wollenhaupt, and Thomas Baumert — Universität Kassel, Institut für Physik und CINSaT, Heinrich-Plett-Str. 40, D-34132 Kassel, Germany

We present a flexible setup for femtosecond laser pulse shaping on the basis of a 2 x 640-pixel LC-SLM (liquid crystal-spatial light modulator). The constructed pulse shaper allows either spectral phase and amplitude modulation or spectral phase and polarization control independent of each other. The polarization dependent losses normally present in the polarization shaping mode of similar devices could be minimized by the use of VPHGs (Volume Phase Holographic Gratings). The very high spectral resolution of this device provides generation of nearly arbitrarily shaped optical pulses on a wide temporal window. Further key features of our setup are compactness and high reproducibility. By applying various phase functions to the LC-SLM experimental tests of the pulse shaper have been carried out. Results will be presented.