Hannover 2010 – wissenschaftliches Programm
Q 61.4: Vortrag
Freitag, 12. März 2010, 11:15–11:30, F 342
Self-diffraction SPIDER — •Simon Birkholz, Sebastian Koke, Jens Bethge, Christian Grebing, and Günter Steinmeyer — Max Born Institute, Berlin, Germany
We discuss a novel variant of spectral phase interferometry for direct electric field reconstruction (SPIDER). This SPIDER variant relies on the χ(3)-process of self-diffraction (SD), which allows for octave-spanning phase-matching. With three photons on the input side of a χ(3)-process, there are actually two different versions of SD-SPIDER possible: one with two short pulse input photons and one with only one. In both cases, the SPIDER-signals are spectrally collocated with the input pulse. We experimentally demonstrated both of these possible SD-SPIDER variants, using a 500 µm BaF2-crystal. Using pulses from a 400 nm white-light continuum, we measure a pulse duration of 8.2 fs. Finally, we discuss pros and cons of both novel SPIDER variants.