Dresden 2011 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 15: Poster 1: Quanteninformation, Quanteneffekte, Laserentwicklung, Laseranwendungen, Ultrakurze Pulse, Photonik

Q 15.65: Poster

Monday, March 14, 2011, 16:30–19:30, P1

Ultrashort laser pulse characterization based on a pulse shaping device — •Stefanie Züllighoven, Jens Köhler, Tillmann Kalas, Cristian Sarpe, Matthias Wollenhaupt, and Thomas Baumert — University of Kassel, Institute of Physics and Center of Interdisciplinary Nanostructure Science and Technology (CINSaT), Heinrich-Plett-Str. 40, D- 34132 Kassel, Germany

Femtosecond (fs) laser pulse shaping is a key technology often used in the fields of fs spectroscopy and ultrafast laser control. In order to characterize ultrashort laser pulses typically autoccorrelation (AC), crosscorrelation (CC) and spectrogram based techniques are employed. A common feature of all these pulse measurement methods is the use of an interferometric setup. In this contribution we present our scheme to combine these two approaches. Our pulse shaper consists of a standard 4f-zero dispersion compressor setup and a double layer liquid crystal spatial light modulator allowing for independent spectral phase and amplitude modulation. This device provides the possibility to simultaneously generate complex-shaped laser pulses and to mimic the interferometer needed for their characterization [1].

We present results on measurements and simulations of collinear AC as well as CC traces and their spectrally resolved counterparts, i.e. FROG and X-FROG spectrograms. In addition, we utilize Fourier techniques to extract the non-collinear information of the collinear measurements [2].

[1] A. Galler and T. Feurer, Appl. Phys. B 90, 427 (2008)

[2] I. Amat-Roldan et al., Optics Express 12, 1169 (2004)