Rostock 2019 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 24: Poster: Quantum Optics and Photonics I

Q 24.16: Poster

Dienstag, 12. März 2019, 16:30–18:30, S Fobau Physik

Spatio-spectral analysis of ultrashort-pulsed vortex beams by means of high order statistical moments — •Max Liebmann, Treffer Alexander, Martin Bock, Ruediger Grunwald, and Thomas Elsaesser — Max Born Institut for Nonlinear Optics and Short-Pulse Spectroscopy, Berlin, Germany

An orbital angular momentum essentially influences the spatio-spectral structure of ultrashort-pulsed wave packets by inducing anomalies in the vicinity of the phase singularity. The spatial redistribution of spectral components was previously addressed and further investigated by applying adapted statistical tools. 2D-spectral scans with high resolution and high sensitivity reveal so-called "spectral eyes" in 2D maps of spectral centers of gravity. Most recent results show that higher order statistical moments not only confirm the first order characteristics but, additionally, are strongly correlated to angular orientation and shape of anomalies. Therefore, combinations of higher order moments enable enhanced spectral contrast and diversify the quantification of even weak spectral features.