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MO: Fachverband Molekülphysik

MO 8: MO Poster 2

MO 8.12: Poster

Dienstag, 10. März 2020, 17:00–19:00, Empore Lichthof

Frequency-resolved optical gating of low energetic optical pulses — •Lars-Stephan Klein, Lukas Bruder, Ulrich Bangert, Daniel Uhl, and Frank Stienkemeier — Institute of Physics, University of Freiburg, Hermann-Herder-Str. 3, 79104 Freiburg, Germany

We are exploring methods to characterize sub-20 fs pulses with pulse energies < 5nJ. To this end, we investigate the use of second harmonic (SH) frequency-resolved optical gating (FROG), cross-correlation SH FROG and an approach using phase-modulated optical pulses combined with lock-in amplification. The latter is a specialized technique used in two-dimensional electronic spectroscopy (2DES) to improve sensitivity and would allow us to perform pulse characterization directly at the sample position of our 2DES setup. In this context, we also explore the possibility to combine FROG measurements with photoionization.