Düsseldorf 2007 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 29: Poster Ultrakurze Lichtimpulse

Q 29.1: Poster

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

Characterization and compression of photonic crystal fiber supercontinuum with ZAP-SPIDER — •Jens Möhring, Tiago Buckup, Bernhard von Vacano, and Marcus Motzkus — Physikalische Chemie, Philipps Universität Marburg, D-35032 Marburg, Germany

Photonic crystal fibers (PCFs) feature unusual nonlinear optical properties, which can be tuned for very efficient generation of broad spectra. However, to efficiently drive nonlinear processes with high intensities, a PCF generated supercontinuum (SC) still has to be compressed. Here we describe the successful compression of a PCF supercontinuum, obtained from a PCF pumped by 1 KHz femtosecond amplified system. The necessary SC phase characterization is performed with zero-additional phase spectral shear interferometry for direct electric field reconstruction (ZAP-SPIDER) [1]. A femtosecond pulse shaper is used to actively compress the SC pulse by inverting the phase obtained with the ZAP-SPIDER. Besides that, the SC spectral properties and stability are discussed. Finally, as an example of a first application of this light source, an ultrafast spectrally resolved transient absorption experiment of a prototype molecule is conducted.

[1] Baum, P. et al, Optics Letters 29 (2004) 210